This is a more clear and clean reference for my current sona, Anvil (need to think of a good last name for him >w<)
The art for this was done by hatarla over on FA: http://www.furaffinity.net/user/hatarla
You should totally check her stuff out! She does really well and is a great person too X3.
Link
keirajo
This is a good reference with the perfect details!