The easiest way to do a french paint is to do it the Leighton Denny way. They sell a product called precision corrector fluid and it comes with a little brush. Paint basecoat over the tip, then your white tip. Use the brush to and do little sweeps under the white tip until you have the perfect smile line. You can also use the product on the skin if you need to. Then base coat the whole nail, pink and finish with top coat. It's really so easy and you always get perfect results!!. My french paints were always hit and miss until I did this training xx