To me the facial structure is too linear and flat. The muzzle needs more definition and shape. Looks a tad long as well.
More like so:
http://tinypic.com/r/1604si/6

Sorry for Redlining but its hard to explain in words how to change things.

Keep in mind the amount of bulk that fur adds to the head as well when foaming. Don't foam to the final size, you have to make it slightly smaller when dealing with faux-fur cause it adds alot to a head.

I've actually already changed a lot of the stuff you pointed out, well most of it... I ran out of foam and have to wait until I get my paycheck to get more, lol. I did shorten the muzzle already and gave him a wider smile because he's not really smiling in these pics. And I've made it so the curve of his muzzle and between his eyes looks a lot more natural then it did. And I've started on shortening the cheeks, since they seem to extend too far around his head.

The head is actually relatively small. I think it's the angle I took the picture at that's making it look really big. So I'm not worrying too much about how much bulk the fur adds.

Thanks for the red line though! They definitely help to visualize what needs to be fixed =P