Did anyone listen to the Draftsmen episode where Marshall introduces the book Picture This by Molly Bang? He talks about metaphor as composition... a gown is a waterfall, the stage design is like garbage, etc. I found it very inspiring. I'll attach an image that I made for a Proko challenge, where I was using metaphor prior to hearing it described that way. In the image I was going for a pleasant, mid century, Disney feeling. Everything harmonious, agreeable shapes and movements, easy, flowing. Feel free to add images in the comments where you tried to carry a consistent visual, emotional metaphor through a piece of work.