those are awesome dude, i like the second one best personally, ive drawn similar things with faces that are a bit more abstract and their melting and deforming and stuff, definite inspiration for new stuff, thanks man
As an artist, I'd say your genre is not commonly seen and it's a nice change of pace. I think what would make your art stand out a little more on paper is to make your lines more solid, maybe go over them with a nice ink pen.
Your shading is good, keep it up; your first post, the anatomy of course is off, but considering the subject matter, I think it's appropriate and you should keep doing what you're doing. Add some color, see what that does for you.
i know what ya mean by unfinished. you could do some more shading, be consistent with your lighting, work on your sense of perception (the mushroom specifically, the spores seem off). The reason why they seem unfinished is because theyre more like symbols and tattoos, not drawings/paintings. Depth would make them seem fuller.
You are a truly gifted artist. the stuff you have created is the kinda work i would pay for. As for the comments from your art teacher just remember "those who cant do, teach"