You can draw the shape of realistic lips with just two strokes.
How to use:
1. Draw the top and bottom lip using the "cookie lips" brush.
2. Add shading and other details. (I use a basic airbrush for shading, and smooth watercolor for gloss).
3. Color using a gradient map (Layer > New Correction Layer > Gradient Map)
4. Add additional details and color adjustments, and done!
Note: You can change the brush thickness to draw thinner or fuller lips.
