Before I add colour, I’ve scanned this drawing in black and white, which might be useful if I ever use it in a booklet. The Boathouse at Newmillerdam is currently celebrating its bicentenary. Although the date is uncertain, it appears on a map of 1826, which puts it in early Gothic Revival style.
Names of features from the delightfully useful Rice’s Architectural Primer. Matthew Rice makes it look so easy but getting all those terms in without overwhelming the drawing is tricky, however I’ve got my lettering on a separate layer so I might alter that a bit when I add the watercolour.