Boobs, check. Butt, check. Now, to do something about her body...give her more mass, she looks like she'll break her back with all that size she's carrying. And possibly make her taller? Like, 7-10ft tall?

Stripes or spots to break up The monotony of her color scheme. Also she could be something other than what’s normal for a fox. A collar or some other kind of bling would look nice too

I agree, some changes to the color scheme would definitely help to make the character stand out some more.

Personally I've always found vulpines to be pretty dull, I think that's because there are just so many of them with little variation. As for pepping up your character, I'd say that depends on what you are looking for. Are you thinking major physical changes to her body mass and shape, or do you think a recolouring and/or accessory sprinkling would do the trick? I think both would work, either as seperate makeovers or as a combination. Before you do something like that though I would consider what her personality is like, it's more straightforward to conceive the mannerisms and build an appearance on that than it is to change an apparance and work on personality as a secondary.

I mean even simple changes like making just the 'hair' on her head a different colour would help. Maybe give her ears some piercings or something. The big ass and big tatas are always nice (could always be bigger though ;) ). Throw some armbands on her. Like wearable ones to add in some different colour schemes to her. Like Atypical said there's a ton of vulpines out there so you good have her looking different from just another vulpine. Right now she's just the standard colour scheme.