Something looks off

[dense arch]

I think the anatomy might be a bit weird (besides the hands), but idk what it is

[sharp grail]

I think this is actually really good!!

I think the real issue is all the dark clothing

They sorta blend into each other

I suggest lightening up the color a little and maybe giving it a different hue? For each person?

If that ends up clashing Mack all the black one slight hue

It just needs to stand out from the lineart