Start with a straight line across the nail.
Add two diagonal lines on each side.
Add two vertical lines.
Add a small dot below in the center.
Connect The vertical lines from step 3 to the dot.
Both sides Completed.
Here is the completed outline. (Don't mind the cuticles)
Add a line across the diamond at the point where the diagonal and vertical lines meet.
Add a line from the pointed part of the diamond toward the area where the line from steps 1 and 2 meet.
Again on the other side.
Add a diagonal line here.
And another diagonal line on the other side.
Completed diamond. Practice this as often as you can, and it will become very easy by my next tutorial!