What is the best and safest way to fix my protruding mouth and sloping forehead? (Photos)

Hello, I've always been self conscious about my profile, forehead slopes backwards, nose too wide and flat, my face is somewhat flat but my jaw and chin protrudes way beyond my forehead.Having large eyeballs and sockets, makes it look stranger. I also have an overbite with very small spaces between my teeth with causes aches and jaw pains. I am also wondering the range at which my budget should be to fix it. Thank you very much in advance!