Illustrator. Usually 'P' for the Pen Tool, creating a female figure with elegant stroked lines. The guides are some sketches and ideas established by robust research of style and minimalism imposed by the later usage of only two colors.
InDesign. Establishing the colors and the other detail; gathering the pieces of information and fitting them in the desired dimensions. Export as PDF, high fidelity illustration, and of course, CYMK. [InfoBook reference]
Film Positives. aka Transparency Films allow the creation of Minimalisa digitally [Illustrtor] and then easily machine print it onto the Positives. The Films must be dark enough to block light from your exposure unit during the screen exposure process. The Films are cut into A4 size sheets. Each color per sheet. In the case of Minimalisa, two. [Films reference]
Mesh Screen. Choosing a Mesh Screen to suit the design and complexity of Minimalisa, an A3, to hold both of the sheets. The Mesh Screen is then coated with a layer of light-reactive emulsion, which will harden when developed under bright light.
Bright Light. The acetate sheet featuring Minimalisa is then laid onto the emulsion-coated screen, and the whole thing is exposed to a very bright light. The light hardens the emulsion, so the parts of the screen which are covered by the design remain in liquid form. The two A4 stencils are lined up perfectly to ensure the final design is seamless.