It went up easily enough. I've now established that the trees either end need to be not less than six inches in diameter in order that my tarp above the hammock doesn't sag once I've put my weight in the hammock. I basically made up my bed in it in the same way as I would if I were sleeping on the ground, just omitting the polythene sheet I use as a groundsheet. So, in first was a three-quarter length Therm-a-rest with a quarter length of cell foam mat attached with Velcro. On top of that went my sleeping bag inside a bivy. I didn't need anything as a pillow (I would normally use my backpack with whatever was still in it with miscellaneous bits of unused clothing on top).
Having unzipped the sleeping bag, I eased my way in. It's a bit like getting into a kayak; you have to be very careful not to fall straight out the other side, which I did immediately. I was asleep in no time. I had to get up to answer calls of nature twice during the night. The first time was no problem. The second time was interesting. I fell down to the soft ground (only about a foot) in my sleeping bag, having tipped over in trying to get out of the bag.
It was all good experience though and I would do things differently next time (and there will hopefully be many more next times). The hammock comprises two layers and has a full-length zip along one side which is intended to open the hammock up to scramble inside to enclose the camper in a bug-free claustrophobic pocket. it occurred to me that my Therm-a-rest and attached mat could go inside as, outside, it tended to slip about a bit. The second change I would make to my use of the hammock (assuming it works in practice) is, when getting out for a pee in the night, is to get out with the bivy and sleeping bag still around me and to get back in with them still on. I'd just have to make sure that I didn't pee in the sleeping bag!