STEP 19
Now change the blending mode of gradient map to divide.
Press ctrl+E/cmd+E to merge the gradient map layer with the layer just below it.
Now change the blending mode of “layer 1 copy(in this case tricky photoshop copy)” to “screen”. I have written a whole tutorial on Blending Modes in Photoshop and you should check that tutorial out if you are not aware of the power of Blending Modes.