Step 4 : Placing colours
Tilt the Plexiglas sheet to direct the flow of coloured liquid and repeat this process with the second colour. Do not let the watercolour run in areas that must remain white (although a slight wash of colour on the white spaces is not a problem).
Use a wedge and absorb the excess liquid with a large liner. You should apply your colour quickly and the film of water (coloured or not coloured) should be even over the entire surface.
Tip: liquid always runs from where there is excess to where it is scarce. To create a painting using the wet on wet technique, try to create a balance between the wet areas; for example, if a pool of colour is 1 mm thick and it isplaced next to a pool with the same thickness, the wet areas will not run.