John Mayer - Dont Need No Doctorray Charles Cover tab

This is on the John Mayer Trio CD "Try!" and no one had tabbed it yet, so I thought I'd 
a whirl!!!!

[ Tab from: http://www.guitaretab.com/j/john-mayer/73151.html ]
e------2p0-------------|
b---------3p0--3-3-2p0-|
g-0h1p0--------4-4-2p0-|
d----------------------|
a----------------------|
e-0--------------------|

I'm only thirteen and this is my first tab so please rate, and give me some tips/comments!!!!!