hi i have been working on making my own magic and was wondering if anyone knew any lesser known self working card principles like the Melberth principle, that you can use to make your own card tricks.
I doubt you could get any lesser known than the Melberth principle because I’ve never heard of that one.
The way to accumulate knowledge regarding self working effects is to study the effects themselves. Start with Scarne and Fulves, then move on to Bannon”s Destination Zero, Nick Troast's work and to Steve Beam’s Semi-Automatic Card Tricks.
If you want the math behind some of the principles, check out Perci Draconis’s Magical Mathematics.