First Choi applied a base coat and then two thin coats of Revlon ColorStay in Bare Bones ($8), a creamy almond. Next she applied orange spots using the brand's Nail Art Neon in High Voltage ($9, at drugstores), ensuring the brush only had a little bit of polish so it didn't create big blobs of paint. Jin says the key is to create irregular forms, so nothing needs to look perfect. To finish, she used the black end of the Nail Art Expressionist in Night & Degas ($9, at drugstores) to add dark accent spots with the tip of the brush. Again, you only want a tiny bit of polish on the brush to maintain control. The end result is a lot more complicated than it really looks, but because the whole design is about imperfection, it's easy to do yourself.