Better Background Blues

Blogger comes with a set of fairly nice design templates, but I've long wanted to personalize my blog with a unique background of my own creation. I thought perhaps this photo I shot in Dawson City would serve, but the composition is all wrong. I also haven't determined the correct size (in pixels) for a proper background image. And there's an ugly halo around the building edge, making it obvious the starry background isn't real.

On the other hand, the black window panels form a wonderful background for text or art; maybe this image is better suited to serve as a flyer or poster. If I had a need for flyers or posters with me on them, that is. Insert pensive emoticon here!