I love foxes! This is so pretty and simple I'd want to add a little color to make it pop. The only way to put this off would be thin lines and a very steady hand.
Delineate Your Lips - Mouth reference by ryky on - 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.