Did these myself:
A) simply pinky
- choose a sweety pink as base
- apply nail stickers of flower with rhinestones
- pink colour as base
- for the thumb, apply a dark purple on 3/4 of the nail
- for the other fingers, use glitter gold and silver to draw some lines on the nails
- using 3D nail art pen, draw some dots on top 1/4 part of all fingers
- choose a big rhinestone and apply on the middle of the thumbs