Botox injections in the DAO muscles will probably be of help for your concerns. it's very easy to test this treatment. I recommend consulting with a board-certified cosmetic dermatologist with experience in treating the DAO muscles.
It's hard to make a recommedation without a picture or an in person visit. An experienced injector can likely inject botox and or fillers in such a way as to even out or improve your smile and facial symmetry. Hope this helps.
Dr Odell
I am sorry you did not get the results you were looking for. This can easily be fixed by injecting a little more Botox to the brow that is higher. Having Botox injected by an expert will minimize your risk having such complications.