Here's another pointer for your class, John Grace --
Both of these guys are holding their signs as if they're baseball bats.
However, while the one on the left, the "Pro," has his grip right-handed,
the one on the right, the "Amateur," has his grip left-handed, even though
the sign (or "bat") is above his right shoulder. This is really bad form!!
The coach would have a word with him.