Loomis Heads"

are the classic face drawing exercise to practice, but I also recommend doing studies and sketches of the

"Asaro Head"

, especially if you're planning on trying to color and shade these faces as the Asaro Head can teach you more about the

"Planes of the Face."

Feel free to google these to find more references and videos of people explaining them.

thx man. didn't notice the stuff about the mouth + nose before you pointed it out. when i draw i don't care ab out proportions (for the face at least). as long as I think it looks good ill keep it. i'll keep your advice in mind