[meissoun]

One more important point: No black/very dark clothes.

And I also don't think filming a workshop is a good idea.
Noisy coinbelts anyone?
Plus she would have to ask all the participants for permission to use a video with them in it. Also, when I teach, I walk around and correct students. I wouldn't want that to be on the video.

I once did a short video with a choreo that I taught for the workshop participants. I just put up the camera in the dance studio, pressed "record" and danced in front of a neutral background.
This is enough if I just want to sell a DVD for a choreography that I teach.
I would not make a fancy teaching DVD for this situation.

Reason: If I can have the entire choreo taught on a DVD, why take the workshop?
In my opinion it's better marketing to offer a DVD with a different choreography. "So you liked this choreo? Here's another one!"

MEISSOUN