It seems that you already got all the skills to driving so you know what your doing. All I can say really is that you improve what you got! Be faster, more agile, stronger. For speed try up hill sprinting. Agility try ladder excercises. And strength just wait training.

im just like you. when im at home im like crossing over behind the back like 20 times in a row. once i get in a game my crossovers are bouncing off my foot. its frustrating