Frustrated!

I DO NOT like this background at all and can't figure out how to change it back to just plain, old blue. We had DH's family birthday party yesterday and I asked DDIL, who has a great blog, how to change a few things on my blog. I picked this background, not really being able to see how busy it was, and she showed me how to make the change. When I actually saw it on here, I knew it wasn't going to work, but figured I could change it later. Problem is, I can't remember how we did it! I know and understand just enough about all this to get myself into trouble. I'm afraid if I keep fooling around with things, I'll end up with a real mess and have to start all over with a new blog, and I sure don't want to do that! So, for now, please be patient with this busy background until I can get it fixed. Sigh!