It depends on what you are going for. Looking down on someone can make them look inferior, small, innocent, shy, etc. Looking even with someone makes them personable, equal, warm, approachable. Looking up at someone makes them dominate, big, overwhelming, in charge, important, etc. For this particular shot and facial expression, I think you're trying just to capture the process of face painting. You don't really want the subject to be either more or less, but equal with the viewer... this is just my opinion though.
Now if she was looking into the camera like she was begging or pretend licking her 'paw', behaving like a cat, then maybe you would want to look down at her to make her look small and innocent. But in this case, her facial expression is more neutral, so I think an eye-level shot would best suit it.
I would also get more around toward the front of her. That way you could get more of her filling the frame without losing the paintbrush. There are two important things in this image... her face with the paint, and the paintbrush (maybe the hand of the person painting). Fill the frame without losing these two subjects and without including anything else, and this will be a much more effective image. It will communicate more clearly.