Blog Button??!!

I love seeing everyone's blog buttons. I'll copy their codes and put their buttons on my blog. So...why can't I figure out how to make a blog button of my own? You see the little owl in the right hand corner? Yeah, that's supposed to become my button. But, as you can see, he's missing his code. Any help, tips, tutoring, freebies :) would be so appreciated! I'm still way behind on this blogging business...