Anatomy basic shapes - most people know of these simple drawing rules. But when you are having fun drawing you somehow ignore them, or maybe thats just me? Anyways, i beleive using them more consistently would improve my drawings a lot!
Delineate Your Lips face tutorial by Fukari - How to Art - How to draw lips correctly? The first thing to keep in mind is the shape of your lips: if they are thin or thick and if you have the M (or heart) pronounced or barely suggested.