Another thing I've written on the various possible mistakes I've learned about.
Edit: Jan 2, 2013: changed the name of the series for 'marketability' reasons, added more content.
Nov 25, 2012 : rephrased some parts.
Also check out what I've written for
... the eyes: [link]
.. and nose: [link]
...the ears, tail, and the core: [link]
...neoteny & acceleration: [link]
Another leg tutorial I think has a bit of merit, by *Whatsapokemon [link]
Standing horse: [link]
Jumping horse: [link]
Crazy Twilight vector: [link]
Diagram about homology: [link]
Photo of the horse skeleton is at least a century old so it's public domain