Addon Handwritten Memnonics "on the go"

on Image Occlusion Enhanced flashcards I would like to add handwritten memnonic devices, as I learn them. So after I’ve done a flashcard press a button, and add a handwritten annottation that will appear the next time I have done the flashcard. I have found the ankidraw addon which does almost what I want it to, but does not save.

Thank you in advance!!