How to transform images:

                     First, open a picture, and we are accustomed to Ctrl+J to copy a layer.

​ ​ Then perform the simplest free transformation first, select Free Transform in the drop-down list of the edit menu, or directly Ctrl+T

                        Scale the image as needed. You can press shift or Alt to scale proportionally, but the effect is different. If you are interested, you can try it.

In addition, there is a transformation menu in the drop-down list of the edit menu, which contains oblique transformation, rotation transformation, perspective transformation, twist transformation, deformation and other functions. Today I will only demonstrate the deformation function for you. You can perform other functions as needed. Practice more.

                                                                                                                  Get the deformed picture after free dragging