Lovely setup! It will look even better when the varius mosses occupy the surface.
By the way, that moss you first showed us is carpet moss and is not usable for bog gardens, since it grows very fast and forms clumped, thick bases beneath the surface that can suffocate other plants. I see it a lot in the mountains around here. It grows along with Sphagnum and sometimes forms carpets, and in a matter of months the sphagnum is gone and only this moss is left - it's very invasive.