Rockstar Horse Loading Mission

I teach horses and people how to have their horse load onto a float/trailer without someone leading the horse into the float. This youtube video will give you a good overview of what I do. I want to start a world-wide mission to encourage horse owners to change their horse from being led onto float to having the horse walk on by itself as per the youtube examples.
So, I need a cartoon to use in promotional material for the 'Rockstar Horse Loading Mission'