Toward Ecosophy

1) Besides writing it out as JMG recommends, I'd also recommend noticing the patterns in the wording - it's much easier to memorize "each gate is invoked by saying the color, an attribute, an animal, then vibrate a divine name, invoke the element, and asking for specific help from the element", and then memorize what to slot into each gate, rather than treating them as four wholly separate things to remember. Also, the sooner you force yourself to do it without the cheat sheet, the faster you'll memorize it. Flash cards might also be a good way to get it into your head quickly - you don't have to actually do the whole ritual to work on memorizing the words - you can do that part more than once a day, in other contexts (brushing your teeth, think "okay, how does the invocation of Water go again?").

Good luck!