Layout Woes

I'm trying to decide how to best lay this thing out. If I were to use the default templates that are provided, the videos are too small to be seen. So I enlarged the videos, and then the page doesn't look good. Does an one know how to edit these templates? It would be great to have a side bar or some thing that scrolls with you as you scroll through old posts, or at least something to differentiate between posts that happen n the same day. Oh well, I'm going to stop here and actually get the link out to you all, so at least you know this exists. After all, it is a webpage, which is supposed to be continually changing, right?