Except it's not finished. I had to put down the brush for the past week due to illness, but I picked it back up tonight and finished the body and head. Now I move onto the arm weapons and I'm going to at least base them tonight. But I went with Thousand Sons colors as it's for that army in particular. Mind you I make some personal changes for personal tastes, but they're the overall colors minus yellow...which I can't figure out where to put it. I also tried making the skulls or spirits or whatever on the smokestacks look like they were made out of tallow candles while vomiting ghost light. I could've done better, but I was super tired when I painted them. There are a few mistakes that I'm not going to go over and fix cause I don't think they're super noticeable, but maybe. IDK. Maybe find a way to smush in that yellow somewhere if I'm feeling spicy.
Also, I use blue-white light in my painting "studio" and I can't get the color to come out perfectly with my iPhone's camera. It keeps throwing a blue heavy filter on it and I can only correct it so much.
This looks sick! I love it.
I checked what the Forgefiend looks like on the Warhammer wiki, and I think your choice of colours, lighter with higher contrast, works much better.