1st stage: Be as technical as possible
2nd stage: Be as descriptive/poetic as possible (use sensory systems.
But remember: the person you're describing this to is blind)
3rd stage: Freestyle the description
Note: Try not to look up images of what you're trying to describe. This could well defeat the purpose of this exercise, or limit your imaginative abilities
~ Happy Writings ~
P.s: I wanted to add this as well-
While the above only an exercise, when you're writing for the real deal (like a book), it helps me to imagine every word I type is going to be read aloud to those who are blind. The goal of a writer is to transport your readers (or listeners) wherever you're writing about no matter where it is, so make sure it seems real, even if it's the most bizarre place your imagination conjures up.