Would wearing highheels help my posture?

[sparky]

I'm 16 and iv have some how dveloped this hump like thing on the top of my back like my head has moved forward and it just looks horrid and unatural I'm really selfconcious about it I dont like to wear my hair up or it is visible so my hair is always down. I'm still in school and I've bought heels they are about three inches and the are thick wedges. Iv noticed that I'm forced to stand straight when wearing the heels- something i never did because i have very bad posture. Imagine iv almost deflated my shoulders are sunk forward and and the curve of my back is exaggerated making me appear small and fatter. I'm slightly over weight- alot of weight is on my chest so that may be a cause of my bad posture- my weight is slowly going down but im pretty sure iv messed up my posture for good now. Please let me know wether the heels will work or not in helping to correct it thanks and I you have any suggestions on how to correct my posture and to get rid of this hump because at the moment it's the bain of my exsistence(yes I sound superficial but still) I hate it and I want rid of it. If I havnt descries the hump let me explain more- put your hand on the back of your neck and follow it down- it's a smooth transition from neck to back wereas if if you were to put your hand down your neck and there is a bony bump almost a finger lenghth wide pertruding oddlyfrom you neck. Everything is attched -it's like the spine just sprouts from the neck outwards but the follows the natural line downwards - i have made it sound worse than it is but still