This is not such a silly idea as it might seem. Skeletons are tall and thin while videos are wide. I’ve been thinking of doing a skeleton for quite some time, but I was trying to think of a way to make the skeleton a bit lively – make him dance! What a briliant idea!
So this will give you a rough idea of how to draw a skeleton whirling and imaginary lasso while riding an imaginary horse! If you wan really detailed anatomical advice, I’d have a look at the wonderful Dorling Kindersley book on anatomy http://bit.ly/AnatomyForTheArtist-UK