Small nitpicky point: For method 4 floor blur, the image caption says "Look mom, no overlay!" But I think there is an overlay. The image looks quite darkened.

Small nitpicky point: For method 4 floor blur, the image caption says "Look mom, no overlay!" But I think there is an overlay. The image looks quite darkened. Putting white text on a blurred image doesn't work without making sure the blurred image doesn't have too-light whites.