I do like these very much. And I am thrilled you finished and submitted for us to look at.
The only thing I can think of with the gold is maybe it is not deep enough and looks bland. Its not easy to tell from the pictures.
What I used to do when I was using gold is use the Old GW shining Gold, or you can get the Vallejo game color equivalent, then wash it with the old GW Brown ink, or Chestnut if you have earliest set of colors. Its a reddish brown color and looks really nice.
Then go back and clean up the gold and it looks fantabulous.
I think a good go by color for now as a wash is P3 chestnut or flesh wash, or you might try the GW flesh shade color in the current line, but ideally you are looking for a dark reddish brown shade color to really make the gold "pop".