We make a abstract nested pinwheel pattern.
|1) We begin with a 200 x 200-pixel square in which we've made each 100 x 100-pixel corner a different color.||2) Then we make a copy of this square, reduce to 100 x 100 pixels and rotate it 180 degrees (or flip horizontally, and again, vertically).|
|3) And then just paste it right in the middle of the original square, and flatten the layers.||4) Now, make another copy of this image and rotate it 180 degrees. Then twist the center (in Photoshop, use Filter: Distort: Twirl). I've used a 57 degree angle here.|