Joint accounts other than spouse will not be considered as valid proof of funds. You need to have funds in your name. Tell your father to make a FD for you. This way you will have funds in your name. In case vo asks for proof of funds before visa, you will have nearly an year old funds in your name to show.
Other members please clarify what can be done in case vo asks for 6 months bank statements ?. FD's dont have statements, but can a bank letter confirming the funds and their length will do the job ?. There is no way that statements for FD's can be obtained as the money is fixed and no withdrawal and deposit is taking place. Any suggestions regarding the 6 months statements ?.