i think gelatine + antioxidant would preserve it much better. your lsd distributor should be down to kindly teach you how to lay gelatine if you can't figure it out for yourself.
I'm curious what it would take to turn an inkjet printer head into a device for printing microgram quantities of a substance onto paper or gelatine with extreme accuracy. Inkjet printers can dispense picoliters at a time, so this can make for extremely accurate dosing.
You might even be able to print it while printing art onto the substrate.

