it's not that its bad for a start, but you're definetly going to have to push yourself further.
I would start doing some straight foward human models, to get a sense of anatomy first.
You need to study wireframes of peoples models on cgtalk, and the good modelers here.
Do tutorials nonstop, and refer back to them often for proper line flow.
You didn't post a wireframe, but I can tell you it is not correct.
The wireframe has to have line flow, not just edges that are randomly pulled out to make features, that will cause line stretching that you see on your model.

Basically understand muscle system will make you understand lineflow.
There are circular muscles defining the mouth that loop inwards all the way into the mouth.
There are Circular muscles that loop around the eyes. The bottom somewhat outer corners of the eyes are then extruded down to define the cheek muscle area, and the left side of the eye is extruded to wrap around the back of the head. For the side of the head, we are not too concerned with too much muscles, so keep it quads flowing downwards, later you will extrude faces out to form it.
The forhead is going to need 2-3 edge loops to form wrinkles basically

------------------------------------------< lines like that to prevent over denseness in other parts of the head.
If you model with these muscles in mind, despite it being a fantasy creature you will be 200% more succesfull when your creature deforms, and you will not be having the current problem of the face looking like it got ripped off and stretched out.

Sorry bout the harsh critique, but thats how it is out there!