If you find this familiar, it was based on the Fishcake item from Team Fortress 2, which I even considered importing into Studio a long time ago, but never got around to doing it due to copyright concerns and no one ripped the mesh anyway.
If I had to nitpick, it would be to maybe add some depth or bumps to the cake itself, while darkening the orange used? Also creating more of a tear effect on the wrapping. They are the only differences I can spot from my memory of TF2’s version.
Either way, this has great attention to detail and I would be happy to leave it as is (if it were my work. Good work!
Great work, the bite mark and the textures are great.
If I went a bit into how it looks, and a realistic side of things, as the item is/been used I believe there will be a inpact on the package itself. Either pushed in or curved to give the idea of use of ware.
The only issue I have is that it reminds me very strongly of an ice cream bar. If you do not want to add texture to the bread crumbs of the model, which would be a pain, I suggest you simply slightly darken the white meat exposed by the bite to a fleshier colour.
Other than that, you should feel proud. Very impressive little item there!