27-2 Nickel..first time working with a Nickel Gun and the Light box..
( Workin' on it Doc
)
( Workin' on it Doc



Lets see a picture of the light box, please. Also, what kind of camera set up do you now have? Your pictures look great to me!!
Just a few suggestions for you. I'm not familiar with "smartphone" photography (looks like you're using a Droid) but if you can manually set the white balance, that will improve the color - try something around 2800 to 3000 to start. Once you get what you want, keep the WB the same on all future pics as long as you don't change the type of lights you are using. If you leave the WB on AUTO, the camera will be "thrown off" by the red (or whatever) background color and all all colors in the shot and there will be a color cast to it - if you know how to use a photo program like photoshop or something, you can remove this cast. Also, your shutter speed is too low to get a sharp picture by hand-holding (EXIF says 1/20, 1/40 or 1/60 sec) - if you shoot at those speeds, you need a tripod.
If you can prop the gun up off the background, the shadows behind it won't be as obvious. Also, keep the camera and gun in the same plane so that the entire gun is in focus - unless you don't want that. In that same vein, your pics are all at the widest aperture (I assume) of 2.8 which gives the least amount of "depth of focus" - using a tripod will allow smaller apertures (8, 11, etc) and greater depth of focus.
Hope that helps a little & good luck!