Create a cool effect with filters
Each element should have its own pattern to create the best effect. Begin by creating a copy of the base layer, selecting the elements and then using a layer mask to isolate one.
The effect works best if the colour shades are posterized. Go to Filter>Filter Gallery and open the Artistic set. Use Poster Edges with the Edge Thickness and Edge Intensity at 0 and Posterization at 1.
To create the halftone pattern, go to Filter>Pixelate>Color Halftone. For the highly detailed areas use a Radius of 10 pixels. For less detailed, increase this number. Then enter different values for the channels 1, 2 and 3.
Place a copy of the photo layer at the top. Go to Filter>Filter Gallery>Sketch>Torn Edges. Use a Smoothness of 15, Image Balance of 20, Contrast of 14. Set the layer blend mode to Multiply to allow the pattern to show through.