Ears can be surprisingly troublesome for many new artists. Though simple they have a rather surprising amount of detail withint the Anti-Helix and come a wide variety of shapes and sizes. This is merely a very simply quide that gives some very basic perspectives and a simplified wedge deisgn. *note the wedge design lacks a lot of detail within the inner ear*
When drawing ears it is very important to match your perspective with the face and angle that the picture takes...otherwise you will ennd up with ears that stick out too far, become too large or disapear. (there will be a page or two on this subject later down the road) This takes a bit of practice and as I suggested with the eyes you may want to take out a magazine or two and try to draw the ears you see.