Use this tip to make grainy backgrounds in Photoshop✨ 📎Select the area and apply the black&white gradient. 📎Duplicate this area and make your rectangles different for a more interesting result. 📎Convert everything into a smart object. 📎Apply liquify and use field blur. add a few points with different blur levels. 📎Now add noise and a gradient map. 📎Add some dark and light areas with a brush on the new layer. 📎Add some details if you want, and paste them under the gradient map. And you got the backgrounds!