test recording I made

Try overdubbing the guitar track (aka playing the same riff twice). And pan each track 100% Left and 100% R.
Also adding a bass track also improves the overall sound alot, if you don't own a bass try recording a guitar track with the neck pickup and then pitch it down an octave or simple use a vsti bass.

Drums sounds good but gets a bit repetitive, try changing some patterns up a bit.
Guitar sounds ok I guess but maybe a bit digital sounding, try lowering the gain a bit.
I also think you should remove some low end from the guitar to make better room for a bass track.