I really like the themes of the pencil stuff here, especially the middle one with the floating veiny ball and the character beneath it. I like the mask too (Light is it called?)
If you colour these in Photoshop and make them 3D with the dodge/burn tools (darken/shadow the edges of every object, lighten the centre) then you've got really competitive fantasy artwork here. Colour and shadow make a huge difference to how bold the pics can become. They're plenty creepy without colour, but with they would be disturbing - in the good sense, of course! The figure tied to the tree looks very Anime/manga styled too, the shape of the head and hair, and if that was all given colour and depth it would be awesome. I also like the lack of facial features on your characters; gives it a total unknown entity feeling.
Dunno how familiar you are with the tools in Photoshop, but if you're uncertain at any point, just open a blank document and screw about with everything you can find in the toolbar - best way to get to the bottom of it and find out what does what. I love that programme; it opens up another world of potential to your art. I'd be lost without it.
Cool stuff.