How to make a plaid background for ps

1. Create a new layer under the picture layer, named "Layer 1", and fill it with any color except black and white;

2. Use "Filter-Sketch-Halftone Pattern", the "size" is set according to the actual situation, and the "contrast" only needs a little feather; "Type" select "outlets" and then confirm;

3. Click on the white area with the Magic Wand (W) tool, and then press and hold the Shift key to click on the black area.

4. Select the layer layer, press the "Ctrl+J" key on the keyboard, and then hide other layers, and the effect will come out.