Steps:-
1. File your nails until you make a square shape.
2. Then apply a base coat.
3. Then wait it to dry. you can apply the base color – black nail polish.
4. Then apply turquoise nail polish at the middle of the nail, but let the black nail polish underneath work as a frame.
5. Then apply another two layers of the black and then the blue nail polish again.
6. Finish the decoration with glitter.
7. Lock the decoration with a top coat.