Armed with additional feedback from the potential client I honed in on an arrangement and style they were looking for. While the cute alligator was nice they really wanted to go for a more realistic look. I beefed him up and now he looks like he's been enjoying a few of those burgers :) I also tweaked some of my milkshake to make it more uniform with the rest of the design.
My design is 100% original art and not saved clipart, which will pose a problem to the other designer who ripped it off and is trying to pass it as their own.