subtractive highlighting



Question; when u guys paint on paper or illustration board do You gesso it first?? I was thinking that maybe this would help to get the scratch "subtractive highlights" a little better??
no mate, if you are using proper illustration board such as schoellershammer or crescent, the surface should hold up to erasing and scratching with no problem, go a bit careful with schoellershammer when scratching those, it much prefers erasing,
that being said, yesterday i decided i wasnt happy with a piece i was working on on schoelllershammer so i took some 80 grit sand paper and sanded the whole board bare again, i even had the background down.... board like new!!