You are gonna need some makeup sponge, 6 different nail polishes , a flakie polish (I used Elf Fairy Dust) and a matte topcoat.
First ombre: You paint your nails with the 5 lightest nail polishes (leaving the darkest behind).
Second ombre: Make gradients with your sponge. Start with the second lightest.
When it dried paint your nails with a flakie nail polish, and after it dried use a matte topcoat.