In Viki King's 'How To Write A Movie In 21 Days' (yes, it's in the fantasy genre) one of her suggestions is to buy yourself something that 'will identify the feeling you want to evoke.'
I've bought a set of cards from her. I'm not going to send them to anybody!
Oh how I'd love her to illustrate my work if ever it's published. (I don't know if authors get any say in this)
Anyway, Viki King isn't ENTIRELY crazy!
But I think I'd go crazy if I tried to write a screenplay in 21 days...though I did write ten pages in less than one day, so I suppose it's worth thinking about...