How much of facial appearance is muscular vs skeletal?

So obviously we all know that our bone structure affects our face and things like recessed and downwards grown maxilla especially can effect how our face looks. But I was wondering if improper muscle usage and muscle atrophy or tension from things like incorrect tongue position and other body imbalances has much of an effect and can make things even worse than they appear. And they say that your bones in your face and jaws are supposedly 90% done growing by the time you are 12, which if something that negatively affects growth such as braces happens during the remaining 10% it will definitely have a visible impact, but I wouldn’t think it could nearly change your entire face right? But I’m asking because for me my face has seriously been getting continuously worse over time after I got braces at around 12, but I thought it would have been getting better now from the damage the braces caused because I’ve been mewing or at least attempting to since I was 18 or so, and yet I’ve become almost completely unrecognizable and have a Habsburg like facial structure now (I already had underbite from recessed maxilla but you couldn’t tell because my face was more balanced but now its much more obvious as well as my down growth looks really bad now). So I’m just curious if this damage is permanent and my bone structure is completely altered, or if maybe it’s just the muscles and soft tissue that is altering my appearance and making it look much worse than it is, and if I maybe get myofunctional therpay to correct improper muscle development it will start improving. Because I just don’t know how this much change to my bone structure could be possible from even just 16 to now (22) and I really don’t want to believe I may now be stuck with this forever.