Okay the second Image I really like but sme thoughts on the first one:
I think the scene is a little bit too saturated and bright to be creepy.
Also the extra arms are a bit too ordered and symmetric for my taste. I think having them a bit more chaotic might be a cool thing.
Also a part of what makes slender man creepy is, that it kind of blends () with the trees, so you can’t realyy tell what’s a tree and, what’s this creepy man. Incorperating this and making him difficult to spot at first glance might be a great way to have more impact with your scene.
when I do lowpoly (wich I need to do more often) I like to not only use the “standard” diffuse one colored shader, but be a bit more liberal. It’s not typical for lowpoly but I think it can work great with this style.
Reference: le Petit Prince
mabye try to make the scene more weird/creepy by including a bit more vegetation, trees and detail while also having some glitched polygon messes to create a bit of unease…
) with the trees, so you can’t realyy tell what’s a tree and, what’s this creepy man. Incorperating this and making him difficult to spot at first glance might be a great way to have more impact with your scene.