First, we will gather the asset which will repeat along the subway wall. Deke demonstrates how to remove an artwork from it's frame and remove the perspective to make a flat image. The image must be flat, because we will later give the art a new perspective that matches the subway. To do this, use the crop tool. Turn on the check for perspective, and you can drag the corners of your crop boundary to match the corners of the photo. Upon commitment to the crop, the image will be a flat rectangle. Place this image in your clipboard by selecting all, then using copy.