Something I don’t do nearly enough of.  
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Random notes on my preferences:
 
Additions: Chest, cheek, hock, and ear fluff (ear fluff along the edge of the head where it meets).
 
Tasteful Deviations: Kitty ears, lower edge of eye dips just below nose line. Try to make head to be a little large. Large, wide eyes.
 
Deviations from Most: Diverse body styles, shapes, features, and fluff for different characters. Very thin hock and neck. Thin front shoulders (of variable shape depending on body type and build). Flared out, wider/larger hooves. Never tuck the thigh into the stomach. Try avoiding detailed plot line. Edges around ‘crotch’ not uncomfortably human. Not totally breaking anatomy to make human-hip appeal. (I’m sorry, but I try to not draw my pony body the subject of your erotic dreams.)
 
???: Eyelashes interfere with cheek and ear fluff, requiring them to be thick and large. Consider revising?