I am working on a three-colour (plus white) print. It works like this:
- Cut out the white areas. Print the first colour (yellow).
- Cut out the yellow areas. Print the second colour (light blue, say).
- Cut out the light blue areas. Print the third colour (dark blue, say).
- At stage one, the yellow covers all areas except where I want white.
- At stage two, the light blue covers all areas except where I want yellow or white - because I have cut the yellow out, now, so it won't be overprinted.
- And at stage three, the dark blue covers all areas except where I want light blue, yellow or white – because I have cut the light blue out to stop it being overprinted - and the yellow and white areas have gone already.