mona lisa in red

This is also a good example of good flow--good lines. Your eye comes into the image at the upper left, where it's all white...then naturally goes to her face, and her eyes, which are leading you out of the image, at an angle. The white draws us back in--and you've got a nice triangle happening.

Then you've got a second triangle happening, because you come into the image, go to her eyes, and the curl of hair by her eyes scoops you away from them, and onto the dark line of her hair...which draws you all the way to the border of the image...and your eye naturally follows the border back up to the top--and keeps running on *that* set of lines.

In other words--the viewer has not one, but two good reasons to take more than one look at this image--and that's great!