Problems with an efficient practice soccer field?

Alright, I live in the country (yes, Howdy Partner want to buy a cow?) and I play soccer. I REALLY REALLY NEED to practices my basics in soccer because they need polishing, badly. The only problem is the 3 acres I live on has NO flat land, NONE. It is bumpy, sandy, snakey, and leafy D:. Now, there is a park in the country subdivision I live in, I'm just not sure how together there since Im 15 and only just learning how to drive Dx any other suggestions, yahoo answers? ♥