Drawing something that is wet and slimy? Here is how to get the look of sunlight bouncing off a wet surface.
This could be an eyeball, slug, or a waxy cap mushroom. You will find this trick can be applied on many subjects. The secret is to overpaint your subject with specks or streaks of bright opaque white. While working in the field, I use Windsor-Newton Permanent White Gauche that I keep in a section of my palette that I reserve for opaque paint.
Click on the first illustration to launch a step-by-step tutorial slideshow.