Bog moss? I've never heard it called that, we usually just call it Mayaca.
I take 4 or 5 stems and push the bunch into the gravel with a pair of tweezers. When I trim I usually plant everything I trimmed off, back into the tank the same way, and I don't remove the old stems. The old stems usually have taken root for me so I end up with a lot of plants as they regrow. I do this with all of my "thin stemmed" stem plants. Other plants with thicker stems are individualy planted with the tweezers.
I also allow anything I trimmed off the plants for the initial planting to float around in the tank to see if it will produce some more stems for me. I like getting just a single stem from someone and turning it into a forest.
Aquascape? I'm a crypt farmer.
It's a fine line between fishing and standing on the shore looking like an idiot.
That IS an aquascape, it's titled "The Vacant Lot".