To be honest concept art is a fancy way of saying "drawing." The same way when you say "man im gonna draw this character and he's going to be cool" and you make something that isn't something else, you just made concept art. Most of it though is environmental but it also applies to character and monster concepts as well.
AFlyinBiscuit
It's better than what I could do damn, I can't make concept for the life of me but I can do sketches and terrain perfectly I think this is really good keep it up
Darnose (Updated )
thanks. you said your good with terrain? do you think you can share a tip because i can't do terrain at all. it's too hard for some reason.