I wake up and rub my eyes, I see a faint blue light coming through the window. It is fairly warm in the room, and as I look around some more, I see that there is the bed I'm sleeping on, a couch, a chair, a dresser, a closet and another door leading out of the room.

Note that the subject chooses to itemize rather than describe the furnishings, possibly suggesting a rigid, methodical upbringing.

It is a pine tree forest.. rather dark

It's barely visible, narrow path that may be treacherous ahead

Note that the obstructions are supposed, rather than encountered.

It's a waterfall.. I'm looking over the cliff to the side of it... it is natural coming from the clear blue lake above

Note the images here: a waterfall (fast-moving water) originating from a lake (more placid water).

It's a canteen.. a blue one

It is an old skeleton key that may unlock a shack somewhere or an old barn