Start with your base coat
Paint your nails black (or which ever color you want)
with a bobby pin/ dotting tool, make 4 dots for the base of the flower
Add another colour if you'd like
With a toothpick or nail pen, use the same colour as your base colour an do small dots toward the middle of the flower
Add a dot of the same colour of the flower in the middle of the flower
Top coat, and then you're done!