As prompted by friends on the forum I have added some details to the well house (bolts on the hinges, and nails/treenails on the boards):
View attachment 426348
View attachment 426349
Yes, the bolts on the hinges are not straight - but since I had to do these freehand (having neglected to include them originally) this was the best I could do.
I am still uncertain if I should be adding 'fasteners' on these build-out elements (there are a lot of walls and such to be added). I struggled adding these nails to the well house (they are 0.40 mm drilled holes filled with wood filler). I can't make wooden pegs small enough. But I wanted to at least try something.
Your thoughts?