How often do you ask for something from staff or providers and get something very different?
A simple tip is to make it measurable instead. That might sound easy on the face of it but how do you make the intangible measurable? I’ve found getting the look and feel of things across to my contractors particularly difficult as I’m not a graphic designer myself so I generally find myself whiteboarding things or using Visio to draw up a concept.
For me, I found that pulling apart what my design concepts are trying to achieve to be the easiest way to approach this issue.