Well, I guess this kinda-sorta counts as a build...
As delivered
Unwrapped and massive wood
After much use of drill and screwdriver
The instructions warned you not to stand on the roof while felting it.
It's GOT to have happened!
Teal blue and cream paint applied
Inside painted, artwork on walls and LED stick-on lights stuck on. There's a small recess above the doors where a USB powerbank lives to run the lights.
On the left wall is a 200 cm Hokusai fabric print - 'Great Wave at Kanagawa' and on the right are some metal 'Guardian Angel' wings from a garden centre.
Tented ceiling, made of a 200 cm square of white polycotton.
Because OSB looks awful even when it's painted.
The summerhouse itself is 7 feet square, pressure-treated T&G, with an OSB roof and 4mm safety glass.
It cost £749 including delivery, and would have been a lot easier to build with help!
On reflection, I should have covered the underside of the roof with fabric before fitting it, painted the roof support members before fitting the roof, and maybe not have painted the rest of the inside. Still, it looks pretty good IMHO.