it would be nice if you could make it bigger, anyway I think the picture has been used a lot before. In fact I am starting to see a lot of those type of pics. However the pic is ok.
I like it because it strays from the over-used weapons such as snipers and rockets, and yet still looks really cool. Good job, but yes, it needs to be bigger.
If you already haven't use photobucket, it works better and is easier to resize. But not bad screenshot i like the lighting.