What should i do if my fractured hand healed wrong?

Depends: It sounds as if you had a hand fracture which did not heal in a perfect position. If it's simply a cosmetic issue, and your hand is completely functional, then really nothing needs to be done unless you are concerned about the appearance. However, if your function is affected, then you may have to consider surgery in which an osteotomy (cutting the bone) is done to re-align it - no guarantees tho.