Probably too many splines. And most of them are way too straight. The head is almost square.
Looking at your splines in detail:Click to view attachment
Don't have splines meeting in a 5-way like this. You can do a hook by moving one of the splines up a bit.
The eye surrounds are very good in the way they follow the curvature of the eye.Click to view attachment
Many of your splines are wrongly connected. To see how a spline runs, click the spline between two control points, and press the comma , key. You can see in the above picture that the spline should not be shaped like this.Click to view attachment Click to view attachment
I can see that you have tried to keep the 4 way cross of splines to be an X by peaking the splines, however, the peak is really only to be used for sharp edges. By smoothing the spline, you can see that the spline actually goes from the bottom to the right, instead from the bottom to the top.
You should look at The Basic Splinemanship Tutorial
to understand this.Click to view attachment
If you look at Colin's Cooper face, you can see that all the splines curve around the shape of the head, whereas yours all run straight.Click to view attachment
You don't need the splines all this close together - in this section you could probably get rid of 6 vertical splines.
It will probably be a lot harder for you to fix this up than for you to completely redo it. I know when I was doing faces I did many of them, and found that it was easier to restart, and much easier to create the face the second time. If you want to try fixing it up, you need to use the K key to break splines, and the Delete key to delete control points. You also need to use the T (turn) key a lot, to get the right angle. You need to highlight control points and use the H key to hide the others.
Sorry I missed your post when you first posted it - I hope you don't mind the critique! But keep at it - you are obviously heading towards the top of that learning hill and the slope down the other side is Soooo-oo much fun!