Very nice work! Fun, too, isn't it.
Here's a tip I learned from a guy: When painting your rifle, warm up the can of spray paint by letting is sit in some hot water before you spray it on. Not boiling water for criminy sakes, you don't want to explode the can...just good hot water. Then when the paint goes on, the warm paint flows on very nicely and evenly. It also dries very fast and you can put on another coat in only a matter of minutes. Be careful and don't blow yourself up, though. If you blow something up I don't know what you're talking about.
I painted my Handi-rifle last year and just this year had it fitted for a new Huntsman barrel. So now my butt stock and receiver are painted camo but the forend is wood grain and the barrel is stainless. Looks REALLY homely when I have the ML barrel on. But, it still looks good with the .223 barrel on.