I worked as a screenprinter for 2.5 years.
You'd need to create a separate image for each colour to be printed. Each colour is applied separately using a different screen for each part of the image that's colour differently.
The only other way is to do it with CMYK using a 'helicopter press' (or it's lesser known name a 4 colour 4 station silkscreen press).
But you'd still need to separate the image into 4 parts, and make 4 silkscreens for each part.
Are there any silkscreen printers in your area? It would benefit to arrange a meeting with them.
Please excuse Scotty, it is his Yorkshire slang. In translation, he means he thoroughly appreciates your illustrations. He really likes them!
So do I![]()