Please I need some help!

Well just the other day I was messing around with my blog. I was adding and deleting thing a my layout. Then I deleted my background and i dont know how to get it back please help me if you know how.

Sorry

Sorry everyone I know that i haven't got on my blog in a long time but to those
few people that still follow me i will be posting soon.

But right know i have to go to a baseball game