First, here are some pages that you may like if you haven’t see them yet:
They have a lot of useful information.
If you create your very own memory palace, why not simply sketch its plan on a paper? or describe it with words:
First room: the bedroom 5loci:
loci 1: a round bed like some_url_.jpg
loci 2: the red curtain …
…
Second room, the kitchen 10loci
But if you use (or practice) your palace often enough, I doubt you will ever need to take a look at your notes!