Just helped my brother inlaw assemble a 12x8' shed. What a bloody awful design. Far too many small panels to screw together, flimsy as hell. Instructions were all back to front, it wanted the windows installing almost as the first job, except it didn't tell you were the frame edges were to be mounted and the plastic sheets were either too big in one direction or too small in the other orientation. After an hour fooking around in the blazing sun, we ditched windows until it was assembled. All bloody day in 30°C sunlight 🥵.
I left him with a basic shell up an semi screwed together . He said it took another 2 days to finish off, said it was a pile of crap his missus had bought.