step 2 of 4
Map the kaleidscoped layer to a sphere. Because it's not square, it'll automatically form an egg shape.
step 3 of 4
Duplicate the original layer, flip it vertically, and set the layer mode to "multiply"
step 4 of 4
Create an ellipse. Feather it by 200 px. Invert. Fill with white. Dismiss selection. Set white layer to overlay.