Have these things ever been used? Clean white lighting? Things collect game especially out on the range. This is a native Texan speaking so perhaps I am being too hard on you due to my experience. Take your own belt for example. (The one around your waist that is.) How long have you owned it? Chances are it has been stretched, cracked and discolored due to age, sun and what have you.
Perhaps I should have started by saying that I think the modeling is good. It is.
My next criticism is that the composition looks plopped down. I think it is very central and none too dynamic. (Do you look at much still-life painting?) Move my eyes around the rectangle. Dont draw them to the center like that and give me no way to move around.
I know I am a pain in the airs critic but you did ask for it.
Good work on the whole, I am sure we can all appreciate the effort you put into it already.
Take it easy,