If I'm following correctly, then the building is 200m tall, so the top is further away, looking smaller, like the sheep, small, far away. Firmino is 1.8m tall. The vertical perspective is never going to lead to a slanted line. Even across the width of the pitch, you barely notice the narrowing. Also, the lines aren't part of the image. They are drawn on afterwards, so should be dead straight. Unless you are anal and want to correct for the 0.004 degree perspective correction.