Hello! Wow, impressive work. The food on those plates looks so vibrant and decadent. In case it's of help to you, the thing that comes to mind as potentially improving the piece is clarifying your light source. The highlights on the food on the plates seem to imply that there is a very bright light source, perhaps directly above the food? Perhaps also backlit a bit? Also, the bottle seems to suggest that the light source is coming from one side of the bottle, as opposed to the top. Either way, the intense lighting that is playing off of the cuisine would probably shine more brightly on the table, creating more dynamic and clear shadows from the dishes, bottle, glass, etc.. Then the question might be, where does the shadow from the hand fall? Would there be more highlights and shadows on the hand and arm?
I think tightening up the light source might then lend itself to more clear detailing of the octopus, which at this point seems less rendered than the rest of the piece to me. I'm looking at your wonderful artwork on a small phone screen, and it seems that has helped see some of these things. Although I imagine you may do this already, maybe pulling back to see how to better integrate the various parts of the illustration is helpful?
Thanks for the chance to learn from studying your piece. Looking awesome so far.