Hello,
Can i use for gum bichromate process this paints ?
http://www.sklepplastyczny.pl/akwarele-van-gogh-381_90/
or http://www.szal-art.pl/farby-wodne/a...bkach-8-ml.htm
or Earth Pigments ?
And paper:
http://www.szal-art.pl/papier-bloki-...5cm-12-ark.htm
http://www.szal-art.pl/papier-bloki-...y-300-gram.htm <- this is with 15% of cotton

Can you help me ? I don't have access to papers like Fabriano Artistico etc..