From my little knowledge I think you need to know what moss you are growing. Some prefer shade and only grow facing a particular direction, eg north facing. Some the opposite. And I have done well with some south facing on my waterfall, so VERY damp conditions but where flowing water brought constant change in nutrients but very cool conditions as you will find many Mosses like it cooler rather than warm.
Plantsnap.com have an article on the top 30 mosses and identifying them, not that I have tried to identify what I have, I just know it grows so move cutoffs around a bit but the cold outdoor pond waterfall is where it always does best.