How to get search engines to notice me

Hi all!

So I’ve got my page set up with my own custom header. I’m unable to use the Tag Line or Site Title boxes under General because if I type anything in them, they show up on my header on top of my artwork, which of course I don’t want. How do I generate a Tag Line so that it won’t appear on my header and mess it up?

Also – I notice that when I go to Google and do a search on my site, just to see how it’ll show up on search, Google comes up with “My Blog, Just Another WordPress site”, under which it posts my address. Which looks goofy. When I do the same search on Yahoo, Yahoo can’t find my address at all. How do I make sure that search engines can find my site under search terms such as “fantasy art” (which is what my site is about)? Thanks for any help you can give – and by the way, if it isn’t obvious, I’m a newbie at setting up websites. Thanks!