I have to say that this is the most true to the original Foxy costumes I have seen so far. Good job! :)

Thank you! I went over every damn frame of animation that appears in in that damn game for hours while constructing it.

Did you know that the Foxy in the first game is a completely different animatronic than the Foxy in the second game? I realized this when I had a complete FNAF 1 Foxy head, with FNAF2 Foxy's whiskers and muzzle...forcing me to cut them off and remake them from new foam to the FNAF1 Foxy's specs. >.<

I can see, why most drawn or crafted Foxys differ in their appearance from the original one in FNAF, as there is really much material to go with. In the frames you can newer see his back and two sequences of them are set in the dark corners of Pirate Cove or the Left Corridor. The only good source especially for the head would be the jumpscare in the security office. And sadly that's it, as the game's graphic is pre-rendered.

Oh, that sucks. :( But yes, every animatronic's appearance differs from the one in the previous FNAF title. For example: While FNAF1 Foxy has some rounded features and a massive underbite with large teeth (which makes him look quite goofy), FNAF2 Foxy is more edgier in appearance and exchanged his jaw for a more fitting one with small teeth (maybe it's just me, but he looks a bit skull like). Here is a good comparison: *click*

Yep thats where I got most of my references while I was working on it. The brightened pictures were a godsend for the head. The teeth especially.