I don't like to go against what has already been said, but I'm afraid Rojas is wrong. While a good photo in its own right, with details aplenty and a unique beauty to it, there is something wrong here. The proportions of the face.
To begin, always draw light when you lay out proportions and the like. You can nip quite a few problems in the bud very early that way, and when you erase these lines, they won't leave any impressions or grey spots.
Now, in things like anime, manga, and the like, everything stems from reality in one way or another. If it didn't, things would look very odd or foreign to us beyond means of keeping our interest. As you improve in technical skill, you'll notice this to be more and more true; almost irritatingly so.
It is always best to begin early to tackle technical issues and begin studies, I say. With this in mind...
Begin to learn facial proportions.

I will use this picture pulled from Google that looks oddly like Johan from
Monster to help illustrate. It's a little small, but bear with me.
The facial proportions of the human face are as follows:
The face can be divided in half, from the top of the head to bottom of the chin, with the eyes as the midpoint. Looking directly on, the width of the face is about five eye-lengths wide. The distance between the two eyes is one eye-length (remember to draw light when mapping this stuff out).
Furthermore, the facial features of the head can be divided into thirds, from the top of the FOREHEAD (not the top of the head, mind you) to the bottom of the chin. The first third is from the top of the forehead to the bottom of the brow (eyebrows). The second third is from the bottom of the brow to the bottom of the nose. The final third is from the bottom of the nose to the bottom of the chin.
The mouth can be found using the final third. Dividing the final third of the face into thirds again, the first third indicates where the mouth line is, and the last two being the rest of the chin.
The details of everything else, from the eye shape and contour, how big or how small the lower lip is, the shape of the nose, etc. is all up to you as an artist.
You'll find that well-rendered abstractions (manga, anime, cartoons, etc.) follow these rules rather well, even with their distortions (huge eyes, a tiny dot for a nose, small mouth, etc.).
Keep working at it! You've got a unique style, and I do hope to see more from you in the near future.
