Most founders know, in theory, that feedback is useful. Fewer know how to collect it well. And fewer still know how to act on it without losing confidence in their idea.

This is the part of the testing process that does not get talked about enough. It is not just about whether people buy. It is about what every interaction — a purchase, a question, a hesitation, a complaint — is trying to tell you.

Once you learn to read feedback clearly, it stops feeling like a verdict on your idea. It starts feeling like a conversation with your future customer. And that changes everything.

Feedback is not failure. It is information.

This is worth saying plainly, because a lot of founders experience early feedback as rejection. Someone walks past your stall without stopping. Someone picks up your product, looks at the price, and puts it down. Someone buys once but does not come back.

Each of those things stings a little. Each of them is also data.

The person who walked past might not be your customer. The person who put your product down may have told you your price needs looking at — or your packaging needs to communicate more clearly. The person who bought once and did not return may have loved the product but found it hard to locate you again.

None of this means your idea is wrong. It means your idea is developing. There is a significant difference.

The market does not tell you your idea is bad. It tells you which version of your idea is working.

The three types of feedback most founders miss

When founders think about feedback, they usually think about what people say. But what people say is only one part of it. There are two other types that are just as important.

The first is behavioural feedback. This is what people do, not what they say. Do they slow down near your stall? Do they pick things up? How long do they spend looking before they decide? Do they come back a second time? Behaviour is honest in a way that words sometimes are not. Someone may tell you your product is lovely and not buy it. Someone may say nothing, pay immediately, and return the following week. Watch what people do.

The second is absence feedback. This is what does not happen. If nobody asks about a particular product, that tells you something. If you have a range of five items and three of them never get touched, that tells you something. If people consistently stop at your stall but leave without buying, that tells you something specific about the gap between interest and conversion — and that gap is usually about price, trust, or clarity of offer.

The third — the one founders do hear — is verbal feedback. The questions people ask, the comments they make, the suggestions they offer. This is the most direct signal, but it needs to be filtered. Not every piece of verbal feedback is useful. The customer who says ‘you should do this in pink’ may be speaking only for themselves. The fifth customer who says ‘you should do this in pink’ is telling you something.

Positive feedback is data too

It is easy to treat positive feedback as encouragement and move on. That is a mistake.

When someone tells you exactly what they love about your product, they are handing you your marketing. The words they use — not your words, their words — are the words your future customers will search for, respond to, and share.

If someone says ‘I love that this is made locally’, that is a message. If someone says ‘this is exactly what I have been looking for’, that is a headline. If someone buys your product as a gift and comes back to buy another for themselves, that tells you about the dual nature of your market — and that is a pricing and packaging conversation worth having.

Write it down. Customers rarely say the same thing twice in exactly the same way, but the themes recur. The themes are your product’s story.

When a customer tells you what they love, they are writing your copy for you. Your job is to listen carefully enough to use it.

How to collect feedback without making it awkward

You do not need a clipboard, a form, or a QR code. In fact, all of those things create distance between you and the customer at the moment when you have their attention.

The most effective feedback comes from natural conversation. Open questions work better than closed ones. ‘What made you stop?’ tells you more than ‘Did you like it?’ ‘What would you use this for?’ tells you more than ‘Is this the right product for you?’

You can also listen to the questions people ask rather than engineering a conversation. Questions are feedback. ‘Do you have this in a larger size?’ is a product development note. ‘Is this suitable for people with allergies?’ is a labelling note. ‘How do I get hold of you after today?’ is a distribution and marketing note.

At the end of each market, give yourself ten minutes to write down what you heard. Not a report — just notes. What came up more than once? What surprised you? What do you want to test differently next time? Patterns emerge faster than you think.

Acting on feedback without losing your nerve

Here is the tension most founders face. You have spent months building something you believe in. Then someone suggests it should be different. How do you know when to change and when to hold?

A useful rule: act on patterns, not on individuals. One person’s opinion is a data point. Five people saying the same thing is a signal. If the same observation comes up across three or four markets, it is worth taking seriously. If it comes up once and never again, note it and move on.

It also helps to separate feedback about the product from feedback about the presentation. Sometimes the product is right and the display is wrong. Sometimes the price is right and the packaging is not communicating it. Sometimes the stall is in the wrong location for the right customer. Before you change what you are selling, make sure you understand whether the feedback is about the product or about the context around it.

And some feedback is simply not for you. Not every customer is your customer. The person who wants it cheaper, faster, or in a completely different format may not be the person you are trying to reach. That is fine. Knowing who your customer is not is as useful as knowing who they are.

How this connects to the rest of your Founders Pathway

In March, we are focused on testing. But what you learn in March shapes every step that follows.

The feedback you collect now will directly inform April, when we turn to pricing and money confidence. If customers consistently hesitate at your price point, that is the conversation to bring to your mentoring session. If they pay without question and come back for more, that is also information — it may mean you have priced too low.

In May, when we look at simple marketing, the language your customers use about your product is the language your marketing should use. You do not need to invent it. You are already collecting it.

In June, when we look at building relationships, the customers who engaged most meaningfully at the market — the ones who asked questions, stayed to talk, came back — are the beginning of your loyal customer base. They are not just buyers. They are the foundation of the community around your business.

Testing is not a one-off activity. It is a habit. The founders who build it into how they work — who treat every interaction as a source of information — make better decisions at every stage of the pathway.

A simple feedback habit to start this month

You do not need a system. You need a practice.

After every market, every sales conversation, every time someone tries your product and responds to it, ask yourself three questions. What did people respond to most? What question came up more than once? What would I do differently next time?

Write the answers down. Not in a spreadsheet. Not in a formal document. In a notebook, a note on your phone, a voice memo in the car on the way home. The format does not matter. The habit does.

Over time, those notes become one of the most valuable things you own as a founder. They are the record of how your business learned to become itself.

Want support making sense of what you are learning?

Our mentors work with founders at exactly this stage — helping you interpret what the market is telling you and decide what to do next. It is one of the most useful conversations you can have when you are in the middle of testing.

Apply for a stall at Thrive Market: Here 

Or book a mentoring session to talk through what you are finding: Here

Not sure where to start? Email us at info@treeshepherd.org.uk and we will point you in the right direction.