The exo looks great! What are you going to house in it? I don't remember... You'll probably want to move the british soldier lichen, on the substrate there it's going to get trampled quickly. My frogs trampled all my pixie cups, and they haven't quite recovered yet.
So, I bought this book about cultivating moss. It's made me realize why my moss never seems to survive more than a few months. Ventilation is key, and by ventilation, I don't necessarily mean air exchange, but actual "wind" blowing across the moss. You can achieve that easily with a fan. Also, it's important to use only distilled water or rain water to water the moss. This is because tap water has minerals and whatnot that the mosses just can't handle. So, since you bought your moss, you'll definitely want to water it properly. The guy that wrote this book really has a handle on things. There was a thread posted about his website, so do a search for moss and you'll be able to find the link (although you may have already seen it).
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