vocal help?

hey guys, i've been singing seriously for about a year. i was wondering if you could help me out any with my vocal technique/performance?

the song is called know my name, its only a clip thats about 50 seconds long.

http://www.soundclick.com/bands/default.cfm?bandID=1004882

im going to be singing this song for my new vocal class on wednesday and would love to not embarrass myself haha.

anything is greatly appreciated

I like your voice, it's got character and personality in that blues gospel style. It could be the soundtrack for a western movie. Sounds in key and fun to listen to in my opinion.