EDIT: <soapbox> I am compelled to point out what I find obvious because it's not translating well. The canvas is a NEW project; the paint splashes are OLD. It be physically impossible for her to paint a wall without painting the thing in front of it. I like to think that the existing splashes reveal her previous work and what they might look like had I actually decided to show them - if you notice, the colors have their own internal logic. </soapbox>
Applejack and Jackson Pollock (last punned name I'm afraid - Twilight Sparkle, i mean seriously I can't even work with that). This is more of a "process" combination than a "content" one like with Pinkie Pie. But I think the inherent nature of Pollock's work is well-suited to AJ. Both are unpretentious, direct, and thoughtful.
I have to say as I was drawing this that with AJ, as well as Pinkie Pie, I really like her mane! Such fun to draw. Fluttershy is next and, of course, her tail is EPIC.
Painted in Photoshop