The third of the images I chose was this lovely lotus-like bacteria.
Invert the image and select an area. copy and paste the selection.
Rotate one of the selections 180 degrees, and overlay slightly using a blend mode.
Use Edit Transfor, Perspective to create a triangle which is cut and pasted 5 times. The trick is to move the rotation point to the tip of the triangle, this makes it easy to move the petals around the centre point.