I like this rider. Her eyes and chin are up, her arms form a 90 degree angle with her body. Her ear, hip, and heel form a straight line. Her legs are completely off her horse. On top of that I really like her suit, I'm not sure if you can see it in that picture but its black with a silver windowpane print. Unlike most eq riders she is on the incorrect diagonal on her victory pass like she should be.
I know, I know, this guy isn't riding equitation, but he is a good example of poor equitation. He is hunched over, his heels are actually UP *gasps*. But come on, heels down is basic eq.