If I have to push my mind to go in a certain direction that is not intuitive, it can no longer imagine freely. It's more like a committee throwing out ideas for a whiteboard marketing strategy.
I look at every detail of rooms I imagine. If it is not there, I conjure it up. I inhabit the room and experience the noises, smells, and personal details. I work toward emotional verisimilitude in all the details of experience -- the way it happened, even though this is something that in reality has never happened.