Help with gum pritns on black paper with white Gouache.

Dear List,
I've been trying to make gum prints on black paper
with white Gouache from a positive transparency. I am
using black Folio print paper, some very cheap white
paint I found I my old art bin. The problem is that I
loose all of the subtleties in the image and only get
very high contrast. Is it possible to print mid tones
with gouache paint? Do the quality of the paint
matters when it comes to gouache? Maybe is the paper?

Thank you so much for all of the great advice.
Love,
Carmen

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Received on Tue Jan 11 11:14:58 2005