@hideki the coke looks great, I think the wooden floor normal map is inverted? The burger looks "dry", maybe needs some reflections on the bun? Anyways, just my 2c, hope it helps.
@rgk thank you, i agree on you with the bun looking dry, maybe i will at a little coat of bright for the next render. I don't think the normal map of the wood is inverted, maybe it's just too strong, but it's not the final texture anyways.