Byrne replies "Artistic license."
Sorry, Mr. B, but that dog won't hunt. Artistic license is valid for picture #2, since it's clearly a frozen moment in the action, so even though Ollie obviously doesn't know how to shoot a bow, it can squeak by on the argument that he hasn't finished drawing.
Number three might even be arguable, even though the arrow is falling off the bow.
But that first picture is just wrong. Incontrovertibly wrong. Try it yourself. Grab a yardstick and a piece of string, make a bow and try to draw it that way, pulling the string up over your shoulder on the outside of your arm. It does not work, and calling it artistic license doesn't cover it because the pose is awkward and doesn't look good.
Here's what it should look like.