Nothing Working For Me On The Header Editor

[Shamantic]

Hi -
I was wanting to use the <> to get my header back to what it was before your upgrade, and found out I couldn't click on anything on that screen - font, color, etcetera. I wanted to reenter what I had because I found the header in my guestbook had shifted to the side today. I don't really want to change the content, just center it, but I cannot seem to do anything there.

I had successfully put in a background of stars and the background is still there, and if I edit (if I can get that to work) is there a way to put my star background back in? I added that background using some CSS code suggested in this forum and it worked, and it really makes the guestbook special.

It is great to have so many features, yet I am a bit lost. I have asked for help a couple of times before in this forum (about other matters) and I must have offended you because I checked for a reply for days and didn't see one - or maybe I was looking in the wrong place. I cannot figure out how to proceed here, though, so I am looking for your assistance. Thanks.
~ Elizabeth (Shamantic)