Thermalite blocks to make the side walls. Really handy these huge blocks as they're structural and insulating.
Cut to shape for a snug fit inside.
More sideways support.
The entrance design I settled on. The bricks across the top are are holed with cement and rebar through the holes.
All snug in place.
the last picture is the roof panels I've made up from scrap wood I had lying about. I'm tempted to felt it and make it water tight for the winter and then maybe tile it next year. It'll be weather dependant I guess.