(I took the photos on the trip, they are weirder then usual and I'm not entirely happy with them.)
So, this is an old but IMO awesome design, that I used as an inspiration for the right hand.
I used acrylic paint to do the triangles.
Polishes I used:
Gabriella Salvete 148 (white)
Miss Sporty 453 (yellow)
Essence BTGN Top Sealer