Pick the Direct Selection Tool and click on the shape path. Click the vertical point and drag it down while holding the Shift key until it reaches the same level with the horizontal axis.

Mountains and valleys have likewise been formed because of crumpling, horizontal pressure, and this will happen again during the forthcoming shift.

Horizontal shift allows you to move the projected image to the left or right of center in a range equal to 35% of the picture width in either direction.