I can't remember much as I haven't studied it since high school but I do remember that the poetry was beautiful to watch. (You may need to find a website with the alphabet shown but I'll do my best)
A dream fading away was done by spelling the word while moving the hand away and letting the letters get looser and less formed.
And one pun: When the movie "Jaws" came out there was no adequate sign as the sign for jaw is just to point at your own. One, possibly local, solution was to spell out the word with both hands while holding the heels of the hands together.
"a" is a fist with the thumb beside the index. "w" is the first 3 fingers straight up while the thum holds down the pinkie. the threee fingers then snap shut like sharks jaws into "s" which is a full fist.