I suggest detailed steps to make poster material with ps: open Photoshop software, create a new canvas and set the size and resolution; then add a background and import the required text, pictures or graphic materials; then adjust the style of the text and pictures, including font, size, color, etc.; and finally optimize the details and finishing touches, such as adding borders, adjusting the layer The final details of optimization and modification, such as adding borders, adjusting the order of layers, etc., to achieve the final design effect.