Some macro-type shots for CC?

[burdock87]

I made a sort of light box and was trying to shoot some pics with it. What can I do better with these sort of shots?

My dad wanted a 2011 Corvette, but all I could find was a 2009; and perhaps a little smaller than he anticipated. Bet it's good on gas, though!

This is the only image I used auto-correct on in my program. Before it, the entire image had a yellow glow. There were no other lights on in the room except the light box (which only has one light at the moment); and I don't think my flash fired. I did another shot like this which was still yellow, and no amount of playing with it could fix it.

How can I avoid the yellow glow? Is that simply because there is so much yellow in the picture already? Or is it camera settings?