>>96295226
Something that helped me with faces were washes thinned with lahmian medium. It helps the wash go where you want it to and reduces coffee staining. A thin brown wash over everything then a thin purple/red wash over the eyes, ears and mouth goes a long way.
Also when you're painting eyes don't use pure white or black, tint them with your base skin colour. It'll make them look less cartoonish and bulging out