I don't like the name plumgraphix.com.
If you are going to have a two word domain it would be much better if it ended with "graphics" which is the correct spelling. That name makes you look like a 13 year old teenager who is trying to catch attention.
Why is there a spot on the flash header for your twitter link? When I visit your site I want to see examples of your design work. I'm not interested in anything else before I see what you do. I have spend 4 seconds on your site and couldn't find any examples. I'm gone. Normally I would spend 1 second. There is no link that says portfolio.