(1) Open PS and import pictures;

(2) Click "Select, Select All" in the menu bar;

(3) Then click "Edit, Free Transform" in the menu bar; (eight control points will appear around the picture)

(4) Hold down the Ctrl key and move the mouse cursor to the picture at the same time On the upper left or upper right point, the cursor will turn into a small gray triangle, and then drag the cursor to change the picture into a trapezoid.

(5) After adjusting, press Enter (return) Car) button, then click "Select, Cancel Select", and finally save.