Patients that have skeletal abnormalities can have surgical procedures, such as a maxillary impaction, to correct these problems. If your ratio between your nose to chin is not ideal with the rest of your face, you might have to live with it unless it really bothers you. If that is...
You mention a protruded jaw as well as slanted upper teeth which make your smile uneven. The photo isn't very clear, so my advice will be generic. If your jaw is protruded, this sounds like you have an overjet. Ideally, an orthodontic consultation would be recommended to evaluate...
It's hard to answer this without seeing an xray & photo of the tooth.Did the tooth break & the filling stay...often, with a large filling this can happen! The xray will show how close the break is too the nerve of the tooth, how much tooth structure is left & the height of the bone...