In my PAN card, the signature is my fathers, can I create my?
You mean to say PAN card was of Minor , So fathers Signature shall be appear. Now if became major than go online update the PAN card Number shall be same only your signature will appear. Another Case is your father made your sign , than you may also update with new signature ( No need of it) In any bank account different sign can be done. But further these signature shall be valid for other official purposes. Multiple sign create problem of forget sign etc.