South Walian, Sammy, has loads of amazing nail art designs on her site, so make sure you have a good rummage. She’s done these amazing nails freehand using varnish as a base and standard shop-bought acrylic paint to do the designs on top with a finishing varnish top coat to seal it all in and make it water-proof.
Sammy used Royal & Langnickel paints. You’ll also need some good nail art brushes; sable paint brushes are always popular (although some prefer non-animal hair, synthetic nail art brushes for ethical reasons)
Dr Seuss Nail Art Tutorial [The Nailasaurus]