The asymmetric picture curvature is achieved by straightening the curved graphic edges.
Make the graphic into a rectangular shape by an asymmetrical picture curvature. Shift the top and bottom lines asymmetrically upwards or the top and bottom lines asymmetrically downwards.
Make the graphic into a rectangular shape by an asymmetrical picture curvature. Shift the left and right lines asymmetrically to the left or the left and right lines asymmetrically to the right.