Some nice stuff in there. (The ultimate evil)
Overall improvements I'd probably make would be to replace the drum tracks with either a real drummer or some decent loops.
Leave a little more space in the middle of the mix for the guitar cause it's getting lost in the instrumentation...either by panning the other instruments farther left & right, or EQing out some of the frequencies that are drowning out the guitar.
Convert to a higher MP3 bitrate. (minimum 192kbps) cause it sounds really lo-fi.
Write in a beginning, middle and ending so it takes the listener on a journey. Right now it kinda just goes along at the same pace, showing off scales and runs but not really going anywhere.