(I still struggle with taking photos under artificial light)
It is basically watercolour technique with acrylic paint, if you want to see a video I would recommend you Spektor's Nails' Salted Watercolor Nails tutorial, it's very similar to what I do, I just skip the salt part and I play around with the colour and water bit more.
What I used:
Gabriella Salvete 148 (white base)
NYC 248 Manhattan (to wrap my tips)
NYC Turbo Dry top coat
I have mixed feelings about these, what do you think?