Day one (20 minute sketch)
Day two (adjusted rider position)
Day three (added the tail (hated it) fixed the rider's head and shortened the horse's foreleg)
Day four (fixed the tail, darkened some lines)
Day five (cleaned up lines)
Day six (fixed the curve in the back leg)
Day seven (started computer rendering)
I need to move the back leg forward and make it a bit longer, but other than that, what do you think?