I finished the 2nd version of Merged Zamasu.
Big changes:
1)I mixed a pose given to me by Yoshin and Freeza's FighterZ pose.
2)Rather than using simple colors somewhat similar to the anime's, I tried to use Balthazar's Goku Black sprite's palette for the black and grey parts of the clothes. I also used the palette from AlexSin's edit of Armentis' Zamasu as a starting point for the skin.
I'm still questioning how the body parts look (especially the face) and the quality of the shading, but the two main changes solve some of the problems that existed in the previous version.