You'll be able to study it by sketching real animals with their muscles only (utilizing a photo reference), and then adding the other components. In us and other mammals, this part of the skin has its own muscles, in order that we are able to suckle when we're babies. If you take a close look at human lips, they're actually a rim of skin curled out. They needn't have the form of human eyebrows, however they needs to be capable of affecting the form of the attention. You also must remember that pictures don't present you the whole image. Animals, though they've a repertoire of facial expressions appropriate for their species, aren't almost as expressive as us, and the entire physique matters more in their communication than in ours. Simplification can let you drag the attention to what actually matters in your design. To research the proportions, collect a set of various references (the more different views, the higher), and sketch the skeletons in a simple approach, making an attempt to discover a recipe you possibly can memorize.
