Congratulations on your twins, the authorities know you have overstayed your welcome but will not deport you. Your finger print is already in the system if you got the visa from Ghana and have gone through the asyl process. If you have your pass you can submit it although you should expect some delays in the procedure if they decide they want to investigate why it took you over stayed your visit. But ultimately they won't deport you don't be afraid. Some Ghanaians like to use a brand new passport in these situations but it is not really necessary. The wait to get a new one at the Ghanaian embassy can be long and frustrating.