2. Since the rounded rectangle is not selected, we will use the selection tool to select the rounded rectangle. You must select a shape before you can use the Free Transform tool.
3. Press the shortcut key: e to open the free-form transformation tool, and click the anchor point of a corner of the rounded rectangle, such as the anchor point in the upper right corner. At this point, the mouse changes into the shape of a double arrow.
4, then, the mouse click don't let go, pay attention to, first stop and let go. Then press the three keys on the left: CTRL+ALT+SHIFT.
5. At this point, the mouse changes from a double arrow shape to a white triangle icon; Then, click and hold, drop down or drag left and right to create a perspective shape. Put the mouse first, then the left hand.
6. Click to release the lower left corner of the mouse, hold down the CTRL key and drag the lower left corner of the mouse to deform. Put the mouse first, then the left hand.