Using this purple highlighter tape is super easy. Just place it on the pattern where you want to mark a row or a change. You can easily move it around if you make a mistake or need to adjust the position. Since it's removable, you won't have to worry about ruining your pattern. When you're done with your project, simply take the tape off. To keep it in good condition, store it in a cool and dry place. Avoid exposing it to direct sunlight or high humidity, as this might affect its stickiness.