the best 2D artists bend the form itself to their will. A few examples in the image below. First: not only having sunk the horizon line, the artist broke it in three (the rightmost segment points to the donkey's eye; the middle, the boy's hand; the leftmost mediates the other two). Already a shader never could do this... And notice the exaggerated swoop of the donkey's belly--from this angle it enhances the frame. Viewed from the front this placement would sag. Lastly, the canvas is *selectively* orthographic--the artist flattened saddle, leg, and arms; only the donkey's head is pushed closer in space.