Help with first foam base

~Hello
I just began working on my first foam base, and I was able to complete quite a bit of it tonight but I wanted to get some feedback on it before I continues working. It is a helmet style base, and the intended character is going to be a white german shepherd. My main concerns are that the muzzle might be too short and that the ears are slightly uneven. It is a toony character, so I don't know if the short muzzle will effect it's appearance negatively. And I have tried to straighten the ears, they are at a point where I don't know if I should just start over or if they will look alright once they are furred. Cheeks, eyebrows, and the like will be added once I can get the base to a point where I like (or can tolerate) it :)
Thanks in advance
Camo~
http://tinypic.com/usermedia.php?uo=nvlS1L5AwLNlGyk9XQEZzoh4l5k2TGxc#.VGYuQYm9LCQ
http://tinypic.com/usermedia.php?uo=nvlS1L5AwLMtdpcG5LiHxYh4l5k2TGxc#.VGYufIm9LCQ
http://tinypic.com/usermedia.php?uo=nvlS1L5AwLOFzOuS2qHeoYh4l5k2TGxc#.VGYuu4m9LCQ