Blending Options>Stroke
Gradient’s parameters: 
Hide for a while again both layers this time of the same DJ. Create a new layer that must be positioned under the DJ’s layers. The new layer should be painted in white with the
Paint Bucket Tool (G). Use after that the
Brush Tool (B) to draw a brushstroke of black color.
Set the next parameters for the layer:
Filter>Pixelate>Color Halftone 
Set also the next option:
Select>Color Range (eyedropper on the white color)
Press
OK and the
Delete button. Select after that the
Free Transform option to move the patch on the right bottom corner, setting the next parameters for the element.
Blending Options>Color Overlay 
Make visible now both DJ’s layers:
