Uneven Bonding: Does my smile look somewhat symmetrical or should I have it redone by someone else? (Photos)

I don't think you need to have your bonding redone. Your dentist could  smooth down part of the edge of your front tooth that makes it appear longer.   This should make your teeth even in length and symmetrical.

You stated that you had your two front teeth bonded after you had an accident.
It is hard to give you advise on the length because we did not see the before photos.
It appears your dentist did a very nice job on bonding your teeth.
It is very difficult to obtain 100% symmetry. If you are unhappy,  he could possibly shorten the incisal edge slightly on the distal of #9.