How can I improve this mix?

may want to carve a notch out of the highmids of the guitar to "sit" the vox in a little nicer. how'd you do the bass? try (in the future if not possible now) blending in a raw low passed (around 1khz) DI bass signal and blending to taste. squash it.
 
hahahahah!!ok, I'll try to get more grit an low frequency from the bass line.
Dexter : It's a local band of my town, when they finished if you want I'll post theyr myspace