This is how I have my students edit their writing. I call it "CUPS with Colors". CUPS stands for Capitalization, Understanding, Punctuation and Spelling. Have you ever told your students to edit their writing and then they tell you they are done after 2 minutes of looking at it and they made no changes? This will help them take a closer look. I have my students go through each letter of CUPS one at a time using the color suggested. For capitalization and punctuation I have them actually trace each capital letter and punctuation mark in that color and I tell them that it their way of proving to me that they did indeed edit their work.