I wish I had done this sooner!

Yeah, I'm sure everyone says the same thing about wishing to do this sooner, but I really do wish it cause it's so much fun!  But I had a lot to learn and am still learning.  I'm jealous of my kids because they are learning what I wanted to but we didn't have it in school back then.  I got most of my business card done, but am still working on it.  How's it look :

I want to fill in the black right corner with something and not sure what!  Or should I leave it alone?