I found this picture on the internet recently. It shows a beauty trick to make your cupid's bow deeper. This is something I try doing all the time. Take a look at the instructions and just do it! Try to use white/pearly eye shadow so that it can blend out easily. I have tried this once with white lip liner and it doesn't blend out as well as I wanted it to. If you are going to use the lip liner you need a light touch of it. Give this a try people!
Peace, Love & Blaze,