Poof! Just like that. It's wonderful.
Tape off the glass or remove it. Out of the three I did, only one had glass that was removable. Thank goodness it was the oval one, as that would've been a bear to try to tape off.
You may have to do several coats. I needed three. I may have only needed two if I had taken the time to stir the paint better... I am still using that can of Oops White I got for the wall decals.
I used a little bit of the yellow canary paint that was left from the wall decals as well. There's still some left in that little container for future painting pleasure.
When it's completely dry, remove the tape and use a razor blade to scrape away any wayward paint. Depending on the tape you used you may also need to use some rubbing alcohol to get away the goo from the tape. My goo was minimal and went away when I used the razor blade. I used frog tape and it worked really well.
Hang and congratulate yourself for a job well done.
TIP: For a mirror collage like this one, play with different arrangements! Keep in mind that you can turn your mirror a different direction than you might be apt at first to hang it. You might be pleased and surprised with the results!
See if you spy these mirrors as photo props in my Etsy shop!