Once the planks were cut to go up on the walls, and delivered
I could start putting up the first layer
with a 75mm gap between each plank.
Then the outer layer was put on, with each plank placed over the 75mm gap (each plank was 125mm wide)
I have also mounted a sliding door on the front
and a couple of windows in the sides (these are old windows from the cabin)
Inside I am using all the remaining off-cuts to build shelving
So apart from some fiddly little jobs left to do, the out-building is completed!!