FAULTS OF THE HEAD
A coarse, heavy head, a head that is poorly set on the neck, narrow jaws, small "pig eyes," small nostrils, and an unpleasant expression.
Short, think neck-goes with short, choppy gaits and makes it harder to balance.
Dips on the top and bulges on the bottom-makes it hard for the pony to flex his neck properly, head carried too high.
FAULTS OF THE BACK
Long back, high withers, low withers, sway back, roach back
Dip in the back