Paul....nicely done piece and definitely a winner. I have always loved the Pre-Raphaelite painters.
A small point though, the figures as presented are from the Sir Frank Dicksee version inspired by the Keats poem. Not Waterhouse. Though Waterhouse did do a version of this in 1893, it looks nothing like the figures and does not include a horse. It depicts the lady with no mercy pulling a helmeted knight to her from below from a reclined position.
There are 5 or 6 of the Pre-Raphaelites that used this as a subject for painting in various depictions.
Sorry, but my Art History degree couldn't let this one go. Especially since its one of my favorite paintings.