Unprofessional Professional

I am by far the most unprofessional professional that I know, but then again, I don't follow others around to see their bad habits.  What do I do that is so unprofessional:

• I don't wear shoes at my desk
• I slouch at my desk, majorly slouch.  At times, you might think I didn't have a spine and I just slid down my chair.
• Some times I don't wear socks at my desk when I'm not wearing shoes.
• I'm currently sitting at my desk with a stolen airplane blanket over my lap.

I'm sure there's more, but this was spurred on by a coworker dropping in on me to pay me for our recognition banquet and I was super slouching in my chair.  It could have not looked good.