Van Gogh's drawings are amazingly detailed. It probably took him a couple of hours or maybe days to finish one. In his short lifetime he created many drawings. Van Gogh wrote to his brother Theo once that "Drawing is the root of everything". And it made me get my pencil and a reed pen.
Unfortunately I wasn't outside looking directly at the subject, so a picture taken a couple of years ago in Russia became my reference:
|"Lake Boats" 7" x 8" Reed Pen|