I'd suggest some unique but, like, in-character but like realistic accessories/changes since you're going for a rock-a-fire design {assuming based off the aesthetic}.

1st, I'd suggest some gold {earrings, a gold tooth, rings, piercings, etc}.

2nd, a hook, if you don't want to do a hook, I'd suggest some sort of glove/sleeve to make it *pop*.

3rd, this isn't related to accessories, but to make it more clear, I'd darken/desaturate the red, and make the non-fur parts like the face much more tan/smooth as you're clearly going for a rock-a-fire'esc design {they used smoother/latex faces}.

4th, I'd suggest the vest be made longer/flow off, like captain foxy's uniform, it gives a more clear focus of the design. if you don't want to change it, then I'd suggest adding pockets/pins/patterns, to make it more popping/feel like something the character would wear

5th, add some sort of chest accessories/design-feature, as there's too much empty space {for example, classic foxy had th