Now, I get a lot of people inquiring me about drawing clothing on un-leveled areas (example. breasts, muscles, larger bodies). Here's a little tip that will give a general idea on how to apply this to your future drawings. Wrinkles will appear when something is 'stretched' or overlapping mounds of objects. When something or someone is wet, the wrinkles will latch onto the body rather then setting. White shirts will show the skin (very similar to a transparent overlay). *Ah look at that man's nipples xD*