I like your Avatar (Led Zep cant remeber who but I think its Jimmy Pages symbol)
Anyway its yellow cause the white balance isnt set right. Go to the articles section there are plenty og tips there.
Your mini is nicely painted just needs more highlighting. Great job.
Yelowish yes but its not so blurry as you say. Dunno if that help but try to play with settings of your camera. If its not the camera it could be not enough light on the scene or both.