Also, try to stay away from poles/fans. thats areas like this

As in alot of edges going into the same point, making it look like a fan. It will make youy model look funky when its deformed with bones, and also the way vertex lighting is done will make it look crap.
Try instead to do with a grid like the pictures maximo posted

As in alot of edges going into the same point, making it look like a fan. It will make youy model look funky when its deformed with bones, and also the way vertex lighting is done will make it look crap.
Try instead to do with a grid like the pictures maximo posted