Thank you! Tie it on the sheet moss, yes.

FYI- My plants lasted about a year and a half after this project. My guess is that, though the bathroom where it was hanging got very humid quite often, it wasn't enough water/humidity. If I were you I would consider making them some kind of wire resting place- so they are not secure. Then you can take them out maybe once every couple weeks and let them soak in a sink full of water. :) Or be prepared to soak your entire frame.