Avoid visual instructions and details.
If you’re testing your website with blind, low vision, or colour blind users, it’s important to avoid giving exclusively visual cues or descriptors in your instructions. For example, “click on the red paperclip to upload a file”. If you’re not sure how clickable images, or other graphical controls, on your website are labelled, this would be an important thing to check before you go through the user testing process.
Never assume how users will use their computers.
When given an instruction