"If you have a good idea, don't tell anyone... tell everyone."
- Muriel Cooper
It doesn't matter if its on the back of a napkin, a scribble on a whiteboard, or a poorly design PowerPoint presentation, all ideas needs to start somewhere.
Show them what BOTH the "forest" and the "trees" look like.
Let them see your idea from 30,000 feet, as well as being on the ground "in the weeds."
Build it! It doesn't have to be perfect the first time. Get it out there, and listen.
Listen to your user's feedback.
And then get back to the drawing board, because there's still more fun to be had!