A (very) quick, (very) simple ref sheet for my undead ponydude, Masquerade. It's a general guideline, not set in stone. Here are some additional notes:

Masquerade's feet/lower legs are humanoid rather than equine for ease of drawing. He also has regular, 5 fingered hands.

His skull can be drawn as realistically as you like, though I often draw him with a bit more narrow profile and fewer molars than a real horse. Stylize and play to your hearts' contents. :3

His clothes can be anything, not just 18th century period garb. He's versatile!