I started off with Butter London All Hail The Queen! I used this because it is an untried and I think it might be my oldest one. Day 18's theme is to use your oldest untried polish so I actually finished that day first.
I used 2 coats of All Hail The Queen! I used China Glaze Westside Warrior for the top polish. The method uses water like water marbling does. The difference is instead of using different colors and swirling them, you lightly spray hand sanitizer on top of the polish in the water and it separates I have regular hand sanitizer, so I took a body spray bottle and filled it up with the hand sanitizer and used that. It didn't quite spray right so I grabbed a napkin to sprat in to and had the mist make the holes in the polish on the water.
I think if I buy a spray bottle with an adjustable nozzle, it would work much better.
This is a pic of my right hand. I got a few big holes going on there which are kind of cool looking.