8/10
You tried really good, but some tips:
-Make objects bigger, or they will move to fast to use.
-When using textures, remeber to put off borders in the appearance menu.
-Remember: A gun looks better when the bullets are in the tube, not next to.
-Look at other shotguns for some tips. It really helps.
-To make a shotgun look good, you can cut parts out of a picture.
Is nice for the rest, doesn't need to be as good as yuras 12, so ignore haters.