Alright These are ok.. the first one is just a little over contrasted though in some areas where you can see just blocks of yellow.. due to the light sources and such which is really bad.. plus it looks too yellow and it doesn't merge well with the colour of the camera.
Though it's really good that's all the problems i see with it.. but really good though.
the second i don't like.. the shadows and angle are good but just seems too closed in which i don't like..
3rd one.. well i think the colour effect is stupid.. flame isn't the best to do that with since it's like hard to do.. i'm sure it's possible but not executed well here, apart from that you're doing good.. i'm not into this photography it just seems soo enclosed and depressing and claustraphobic.. which makes me actually feel sick .. like not in a bad way but depressing things and such make me feel sick.. and stuff..