For the automatic drawing piece I did, even though I got that drawing approach from Sigmund Freud, my favourite person who draws from imagination alone is Illustrator Katie Scott.  Her images have inspired me to draw without any visual reference, which is something I'm very new to at this stage.  Her subject matter doesn't apply to my work as its mainly botanic style drawings, however its the drawing approach (drawing from imagination) I got from her.  Her imagery is stunning and I hope to reach this level of technical brilliance someday as well as keep up the naive, child like drawing style as well.  Here's some of her work.