It's super easy, all you need is dotting tools (or toothpick) to make the leopard pattern. I'm using yellow polish as the base, but it's up to you to use other color or maybe you can make it ombre/gradient! :D
Remember, practice makes perfect ;) Good luck...
NYX nail polish NGP 125 'My Sunshine'
Revlon Nail Polish 919 'Black Lingerie'
Missha Top Coat