Nice start - it looks pretty close to the references and if that's what you are going for, cool.

But to be honest, if I were you, I would try to find some better pictures - there are some pretty dodgy things going on in those references - for example, the eyes are too high and the upper half of the head is just way too small.

Hope you don't take offence - it just depends on whether you are going for an anatomically correct model or not.