Your art is amazing, Jazza. The shading is great, the hair details are very well done, the coloring is gothic and dark and i like the idea of Slender man inspired art.
The one problem is with the Slenderman's legs. Its so exagerated and cartoon-ish, it takes away from the seriousness of the picture.
Your Slenderman design seems more of a cariacture then anything else. its fantastic art