it is a good start. Just a few things.

1. There is some weird line in the middle of the head. I often have the same problem so do not ask me how to remove it. Maybe you wanted to make a line there.

2. put antialiasing on for the next render. You do not have to but looks better.

3. WOW...you already textured the tongue. Looking awsome. I can not really see it...is there a bump map?