Head
Heads can take quite a while to master. Depending on your style, you might have a simplisticly shaped head (did I just make up a word?) or a complexly contoured head. Don't get scared; you'll find out what's right for you as you practice!
First, we're going to base this tutorial on some realism, and then dive into cartoonism.
Generally, a head is oval-shaped (somewhat upside-down eggish) and can be divided like so: in the very center is where the eyes go, then the space below that can be divided twice to show where the nose's tip and the mouth go.
With this in mind, we can now divide how wide the eyes should be. The thickness of one eye can be lined up side-by-side 5 times across a face; in other words, if you split the face so that you have five equal vertical portions, you've found the thickness of the eye.
...Aaaaand here's a look at how the face fills in, according to realistic proportions (and yet with a cartoony face sketch-in):
Wait! Don't get bored yet-- we're almost done with the boring stuff; we're going to now take a look into profiles. A profile consists of two ovals, basically:
From here, the same proportions applied to the front of the face get applied to the side (for eyes, nose, and mouth placement):
The nose starts at the red line and goes down. From the tip of the nose down to the chin forms a diagonal line. Above the nose, remember to put in where the eyebrows go, and then how the head forms from there... Basically, everything here is drawn on the outside of the premade lines; nothing goes inside yet. This can be a tricky step and can take a while and lots of sketchings to get down.
