its a good idea, but it doesnt fit....or maybe its just the paint job. the gun draws to much away from the model. may be if you shaved it down and added some bolter parts or even try and shoulder mount it it may look better.
I might go back and repaint it something like purple if its too flashy. I dont want to modify the gun though cause I'm imagining he picked it up in midst of battle, rather than trying to make a tau weapon look space marine-esque. So adding bolter parts or a shoulder strap would detract from what I'm aiming for