Can anyone that uses Blogger, provide html help?

Zombirella Zombirella
I'm trying to set up a blog, but I want a cute layout.
I was trying to use one of the backgrounds and banners/headers from this site: link

However, the tutorials don't help AT ALL. I can't figure out how to do it. I've tried for two hours. It's like I can get the banner and background on but there's a transparent(well not 100%) box that won't go away and messes up the background, I suppose it is where the text would show up in a blog entry. Then there's a grey box at the end that I can't get rid of either.

Does anyone know how I can add stuff from that site to my blog? They only have a handful of already put together templates.

I'm just about ready to forget the whole blog after all this frustrations
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