The easy part about drawing Popeye is that he is wearing simple looking clothes. Just a regular pair of blue jeans, white sailor shirt, and dark brown heavy looking shoes. He is a big bulky character that doesn't really have any form of detail at all, just basically on the clothes. So what you do here is sketch in all the detailing on the pants, shirt and shoes. If you look really good it is all line art that creates the illusion of wrinkled pants and shirt.