From the block-print-like flower composition on white (shown second from the bottom of this story), I used LAB color to apply individual color channel adjustments to create the eight variations shown in the Photoshop collage (immediately below). To learn how to do this in detail and step-by-step, check out my complete online video training course Creative LAB Color in Photoshop. This course provides unique and detailed information, substantially the result of years of research, work, and experimentation on my part, that you can find nowhere else.
I created the original version shown below using my Photographing Flowers for Transparency technique on a light box. The channel adjustments in the collage (above) use variations that do not involve inversions of the L-channel, which swap whites for blacks (and blacks for whites), and (in this case) create a black background effect. An example of an L-channel inversion of the block-print flower image is shown at the bottom of this story.