HH book 2 page 21

There's 2 hidden messages in this page, can you find them?
Clue: On the board read on from the circled H, all the letters will form a message.

Fun fact: This was one of the first pages I came up with for this comic, the first one will be at the end of book 2! Also this isn't an actual proof...I have no idea what they look like obviously!

Thanks in advance for any faves/comments!

_{Frankie is my character, so ACTA can suck it.}