How do you cover up shaving cuts?

It depends.

Right now, I have a small cut on the left side of my forehead, and I am using my bangs to cover it up until it heals. No matter what, DO NOT PUT MAKE UP OVER THE WOUND! It can lead to infection, and it is a lot harder to cover up an infected wound.

The best things to do are to put a band-aid over it and then, if you have any liquid foundation, put it over the band-aid and your face.