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Stage 1 · Lesson 10 of 10

How to critique and improve an existing interface

A repeatable method for reviewing a screen and turning observations into improvements.

  • Beginner
  • 40 min
  • 3:39 video
  • 3 check questions
  • Exercise: 45 min

Read first Principles of visual hierarchy, Typography, type scales, readability and font pairing, Colour theory, palettes, contrast and semantic colour

0:00 3:39

WatchNielsen Norman Group3:39

UX Design Critiques: 3 Tips for Effective Feedback

How to run a critique that produces decisions instead of opinions. Watch it before your first critique: it changes what you write down.

By the end of this lesson you can

  • Use a repeatable method to critique an interface against goals and principles.
  • Separate observation, impact and suggestion in written feedback.
  • Prioritise improvements by their effect on users.

The idea

Critique is a core design skill. You will critique your own work every day, review teammates' work, and assess competitors. Good critique is specific, grounded in goals and principles, and useful to the person receiving it. "I don't like the colours" is an opinion. "The two buttons have equal weight, so people may not know which one continues the booking" is a critique.

A five-step method

  1. Understand the goal. Who is this for, what are they trying to do, and what does the business need? Without the goal, you cannot judge anything.
  2. Do the task. Try to complete the main task as a user would. Note every hesitation.
  3. Review with principles. Go through hierarchy, grouping and alignment, typography, colour and contrast, consistency, content and copy, states and feedback, and accessibility.
  4. Write findings as observation, impact, suggestion. What you see, why it matters for the user or the goal, and one possible improvement.
  5. Prioritise. Rank findings by how much they affect people's ability to succeed. Lead with the most important, and include what works well so it is kept.

Critique is not testing

An expert critique, like a heuristic evaluation, predicts problems. It is fast and cheap, but it can miss real problems and flag ones users do not mind. Use critique to improve designs before testing, and confirm important findings with real users.

Why it matters in real projects

Designers who can critique clearly improve their own work faster, give feedback colleagues value, and present their own decisions convincingly. Critique also appears in many design interviews ("critique this app") and in client work, where you need to explain what is wrong with an existing site without offending its owners.

A realistic example

A designer is asked to critique a charity's donation page. Instead of listing dislikes, they write:

Observation: The monthly and one-off options are shown as two small tabs above the amount buttons, and "monthly" is selected by default without a clear label. Impact: People intending a one-off gift may set up a recurring payment by mistake, which damages trust and may lead to refunds and complaints. Suggestion: Ask "How often would you like to give?" with two clearly labelled options and no default, or default to one-off and offer monthly as a clear second choice.

The finding is specific, connected to user and organisational impact, and offers a direction without dictating the final design. The charity's team immediately understands why it matters.

Numbered annotations keep critique concrete. Each number maps to an observation, its impact and a suggestion.

Step by step

  1. Write the goal

    One sentence each for the user goal and the business goal.

  2. Complete the task twice

    Once naturally, noting hesitation; once slowly, looking for problems.

  3. Go through the principles

    Use the checklist: hierarchy, grouping, alignment, type, colour, consistency, content, states, accessibility.

  4. Annotate a screenshot

    Number each issue on the image.

  5. Write each finding

    Observation, impact, suggestion. Keep each to two or three sentences.

  6. Prioritise and add positives

    Order by user impact. Add two or three things that work well.

Common mistakes

  • Mistake Critiquing without knowing the goal.

    Instead Ask, or state your assumption about the goal before you begin.

  • Mistake Stating preferences as problems.

    Instead Tie each point to a principle, evidence or a likely user impact.

  • Mistake Prescribing a full redesign for every issue.

    Instead Offer a direction; leave room for the designer to solve it.

  • Mistake Only listing negatives.

    Instead Say what works so it is not lost in changes.

Check your understanding

Choose an answer, then check it. There is an explanation either way.

Question 1 of 3Which is the most useful critique?
Show answer

"The sidebar has nine links of equal weight, so the two main tasks are hard to spot. Could we promote those two?". It states the observation, the impact and a possible direction.

Question 2 of 3What is the first step of the critique method?
Show answer

Understand the user and business goal. Without the goal you cannot judge whether a design works.

Question 3 of 3How should expert critique relate to usability testing?
Show answer

It finds likely problems quickly; important findings should be confirmed with users. Critique predicts; testing confirms.

Practice exercise

Exercise · about 45 min

Write a structured critique

Critique the sign-up or onboarding flow of a real app using the method.

Steps

  1. Write the user and business goals.
  2. Complete the flow and annotate screenshots.
  3. Write at least six findings as observation, impact, suggestion.
  4. Prioritise them and add three positives.
  5. Share with someone and ask whether each finding is clear.

Deliverable

An annotated critique document, around one to two pages.

Assignment

Assignment

Critique and redesign

Choose your top three findings from the exercise and redesign those parts of the flow. Show before and after, and explain how each change addresses the finding.

Deliverables

3 items

Self-assessment

Tick each item when it is true of your exercise. Be honest; this is for you.

5 items

Summary

  • Critique is specific, goal-based and useful.
  • Method: understand the goal, do the task, review with principles, write observation, impact and suggestion, then prioritise.
  • Include positives so good decisions survive.
  • Critique predicts problems; testing confirms them.

Further reading

Third-party sources, chosen for reliability. They open in a new tab.

Your notes

Marking complete updates your course and roadmap progress.

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