I use a very thin paper (45g/m2) for my monotypes. The paper has similar qualities as bible paper, with strong fibres creating a very hard surface.
Because of the papers lack of body and absorbing capacity, the watercolour stays on the surface creating small pools of wet paint.
When the colours are applied I control the spread of the wet colours to shape the beginning of the image.
To do this I put another sheet of paper over the first and with my hands press and smooth out the paper.
Then I very carefully separate the two sheets and let them dry.
On each sheet there is a a print of the applied colours.
These sheets become the material and starting point for my paintings.