I think it's a bit strange for people to be recommending that you get a bimax surgery to fix an aesthetic issue. That's at least a hundred thousand dollars and really only makes sense in cases where there are functional issues involved such as sleep apnea, TMJ, problems with chewing food, etc. You would indeed benefit from such a surgery, but it really doesn't make sense to do in your case unless you don't mind dishing out 100 grand. You look good. So I'd recommend camouflaging the maxillary-mandibular recession by either: sliding genio, and paranasal implants OR filler in your nasolabial folds / upper lip and on the anterior part of your cheekbones. Filler is probably a good first step because you can at least have something of a "preview" of what implants would look like should you decide to go down that route. Not the best long-term solution, however, because they're only temporary. You could also get filler done around your jaw and chin which can help mask the submental fat you're referring to and give you the look you try to achieve regularly by moving your jaw forward. Just so you know, by the way, it's normal for women to have SOME fat underneath the chin, even if your lower jaw is very well developed; this has to do with the fact that women store their fat subcutaneously. It's very important to understand this because its presence can lead to dysmorphia if it's thought to be abnormal rather than something that's found in the vast majority of women. You can diminish its appearance on your own right now by just contouring the area.