I don't know exactly where you want that picture in the back, so let me tell you how to move it. First go here:
http://www.livejournal.com/modify.bml Then in the overrides box, look for this:
background-image: url(
http://im1.shutterfly.com/procserv/47b4d910b3127cceb30b054f008a0000001610);
background-attachment:fixed;
background-position:95% 30%;
background-repeat:no-repeat;
Real simple. Where it says 95%, that means its 95 percent from the left side of the page. For example, if you but 50 percent, It will be right in the middle. And then 30 percent is from the top. So it's 30% from the top of the page. I was looking at your page in 1024x786 screen resolution, so it might look weird if your in 800x600 or whatever. But yeah. It's that simple. Just play around with those percentages. If you need anything else, you know my sn. Peace