In e-mail format. You'll need to be familiar with e-mail format. There is a ton of really good info here. These folks are making their own tissue etc. From Klaus Pollmeir I have no experience with sumi inks, but she should try water colours or temperacolours, ca.
Exact amount depends on the pigment's covering power.
Let gelatin swell for 30 min. Combine the two and take about 25 ml to coat a sheet of ca. If you want to store the tissue and need it unsensitized, replace the dichromate solution by water. The tissue we used was from Hanfstaengl - not Hahnemuehle, which is a paper manufacturer. It is a good idea to prepare the tissue in the evening if you want to use it the next morning.