Walk the actual task
Open the page as a first-time visitor. Name its purpose, find the next action and follow it through. Write down the point where you hesitate; that is often more useful than a general comment about polish.
Resources · 3-minute read
A useful interface review
A practical checklist for the main task, mobile reading order and states that are easy to miss.
Make the narrow version deliberate
Review the reading order, image crop and spacing on a phone. Controls should remain easy to reach, labels should stay visible, and content should not require sideways document scrolling.
Try the less convenient path
Use only the keyboard. Submit an incomplete form, search for something with no matches and interrupt a request. Clear feedback and recovery paths are part of the interface, not a final layer of decoration.
