The results from green tea and rust are the best.
These are some of the other results [showing the general process]- the dotty blobs are created from the rust as the fluid dried on the paper.
I wanted round, dotty letters and have made them as simple as possible. Not sure which ones to use - the positives, negatives, or relief overlay with both. I was thinking a concertina book, but may have to change my ideas to accommodate the relief [I really like the shadows]. Any ideas???