Private commission, sketch done yesterday evening:
She seemed to like it so I'm taking it to the next level: enlarging it and inking it. The final version will have some color in it.
(I tried to combine pictures I've seen of cheetah turning nearly on a dime, something not-quite-approaching horses, and a full gallop. Not certain it works 100%, though... Oh, and I made the "horn" part of a samurai sword, complete with a tsuba on the beast's forehead. I just had to do something different with it.)
UPDATE: Here's a revised version, based on some much-needed feedback: