QUOTE (AStarshipforAnts @ Feb 14 2013, 01:05 AM)

Sure thing!
First I'd like to say that you really got the cheek line on the 3/4th profile down (as in slightly from an angle) You need to work on that whole profile though.
A suggestion is that you start with the outline of the head, be aware of things like how the neck link to the cheek bone and then use lines to get the right positions
.
Your proportions is a bit off, nose and mouth seem fine, but eyes are to small and to central.
Bear in mind that the eye socket runs like a half circle from the nose ridge. Starting out with oval/egg shapes and adding eyelids over them helps with getting shape, eyes are one of the most expressive parts of the face, together with the eyebrows, perfecting it allows for some pretty neat tricks with subtle change to add emotion.
Ears are kinda tricky aswell a good guideline is to have the top in line with the eyebrows, and the bottom near the mouth.
Oh yeah, your noses are great!
The ork one seem a bit low in relation to the eyes though.
I personally trying to learn to draw realistic portraits, so I put a lot of empathsis on shadowing, obviously not going to be something that major for the style you do, but even this style benefits alot from subtle highlights. Look at comic books for inspiration.
Now this is maybe the most important tip I have.
If you're commited to doing this.
Draw real things, draw trees draw people.
If you understand how things should look like it gives an amazing foundation for stylistic approaches.
and draw a lot!
You should really consider getting a couple of art study books of anatomy, faces and such. they're great tools.
If you have a role model in illustration seek them out! hear what they have to say. A lot of them are really kickass dudes that gives so much back.
I contacted Todd Lockwood (As in the guy that drew covers for the drizzt books and basically defined the dragon look in D&D3) Asking for advice on things like shading in colour and such.
Not only did I get a reply, he had taken time out of his day to draw actual examples! and tell me about his own experience getting into the business.
So never feel disheartened or to afraid to try

Avoid H.R. Giger though, he's an anti-social twad that doesn't want to speak to anyone and gives a huge pretensious list on how to become "a great artist"
Shit like don't watch TV or play games...
A bit rambly, but honest and as constructive as I could make it.