I've heard a lot of talk about futzing the fur to make Chewbacca look better, but as Travis states, that doesn't appear to be the big problem here. The Bantha in the room (see what I did there?) is the sculpt...in this case a soft or semi-soft sculpture, but a sculpt nonetheless.
The eyes are set too close together, the muzzle protrudes wildly, and the lips look wrong, although granted the latter could conceivably be fixed.
And while everyone goes on about how difficult fur is to get right...I think back to all the furred and/or plush toys I saw or had as a child and I'm not necessarily buying it.
That muzzle area with Chewie's "moustache" could likely have been done much better, although admittedly it may not have been in the production budget.