I decided a few days ago to try to make my own nail decals using stampers. I used this tutorial and one of my favorite nail designs.
I occasionally have a similar pattern as a phone background. And I've used it on my nails countless times. But this is a new twist, since the background and the leaves are different colors.
For this I used Morgan Taylor Little Black Dress (black), Essie The More the Merrier (green), OPI Mod About You (pink) and for the nail decal backing Revlon Multi-Care Base & Top Coat.
Pro-tip, the nail decals last several days when left on a piece of plastic (I used a cut up sandwich bag.) But I would highly recommend using them ASAP after creating them. You should be able to put it directly onto your nails or with a layer of base coat. I needed a base coat, a lot of smushing, a little polish remover to fix up the edges and then a top coat.