Here is a really simple nail design that I have on my nails now.
The yellow nail polish is from Barry M, nr. 134 yellow, and I used two coats of it. If I wouldn't have done a design over it I would probably have needed three coats.
The black and white polishes are both from e.l.f. All I did for the flowers was to dab a little polish on a paper then I took the end of a bobby pin to do five dots in a circle and then one in the middle.