To help students become more independent and better at self-monitoring their writing, I give them a post-it checklist. The benefit is not only that they hit all the points (capitalization, order, punctuation, and spelling), but since they each have a separate checkbox, students are encouraged to check for each separately, thereby ensuring that their focus is not divided. It also means they read through their writing at least 4 times!
Print your own COPS editing checklist here. My tip: print one on a regular piece of paper, then put post-its on top of the 6 you printed to ensure that they align properly.