Steps:-
1. Apply a Polish on your nails with a green color.
2. Apply white polish in oval shape on the center of the nail.
3. Use a a thin brush to make some white lines all around the Oval shape as shown in picture.
4. With a doted tool of black color make some dots around the white area in the center.the size of dots may vary it may be small or large as shown in picture.
5. You are done.