Unhappy with side profile - what should I start fixing first? (photos)

I would like a doctor opinion about my face, I’m don’t like my side profile at all. I’m currently wearing a Myobrace appliance for adults because my dentist said it would help grow bone and fix a lot of things such as narrow palate, slightly crossbite, mouthbreathing and improve my overall appearance but I feel skeptical about that. I’m 23 years old, I have deviated septum and loss of the cervical curve. What should I start fixing first? Thank you.