Shari Blaukopf is a watercolor painter based in Montreal.
She is a dedicated location sketcher, and you can find her sketches on a dedicated blog, as well as in a section on her website, and on the Urban Sketchers blog.
Even in her more finished work, she maintains a feeling of the informal immediacy that comes from location sketching.
I particularly enjoy her loose approach to rendering architectural elements, and her take on simple, unassuming objects that might often be overlooked as subjects for paintings.
Blaukopf often augments her watercolor sketches with pen and ink, and she has two instructional video courses on Craftsy.com related to sketching in pen, ink and watercolor.