It looks awesome.
However, if I am to judge based on the background, he looks like a frankenstein monster fresh from a modern lab. I think we can make him more connected to his backstory, if we put an indication that he has been living in a tunnel/forest for a long time? Maybe change the modern pant with a plant-type pant?
I hope I did not degrade your interest in art, this are just a newbies criticism. 🙂
In general, I do like how you do your art.
!1UP
Thank you, @thecuriousfool, for the great comment. As for the design of the Flesh Golem - it was based on how it looks on the game card. Correct remarks and I would also make him more like a swamp-dweller. Arrr !!!