In this 'How to' I want to show you how I make a B&W shirt, but this method can be used for any other surface. Therefore I have mixed some pictures I made from other projects. My main goal is that the person I want to paint must be the person. Therefore it is very important to put exact reference lines on the surface.

This man, Nelson Mandela, has showed the world what can be done when you have a strong belief. With my added text he could say to us "now SHOW ME what you can do"
Every design begins on the computer. When the design is ready I print it on laser film.
I can use paper also but when I want to make another painting with the same design, film stays in a good shape. You can also use printable sheets for an overhead projector.
A larger design? Print it and tape the sheets together. I have never done a mural, but I will use the same method.
With a hot soldering iron I melt tiny holes in the laser film.
The holes must be wide open enough, to spray some paint trough it on the shirt. I spend a lot of time on this one.
A greater number of reference lines make the final results to a success.
This picture shows you a close-up of the holes. When melting the holes there will be  tiny smoke circles. Ventilation or an extractor fan must be used to protect your health.
On the right the taped sheets with burned holes in the paper. You have to make some agreements with yourself where to put the holes. As you can see on de picture of the teeth I decided over there to put the holes inwards the white areas.
I pull a shirt over a metal plate. Now I can use magnets to hold down the laser film on the shirt. For canvas I use magnets on both sides of the canvas to hold down the paper to the surface.
The film on the shirt. On the places where the holes are, some magnets must hold down the film with as much as possible pressure. For the paper on the canvas only a few magnets will do the job.
After I sprayed trough all of the holes I move all the magnets from the left to the right. Then I lift up the film, to check all the reference lines are on the surface.
All the lines are on the surface.
Finally I can start airbrushing. All these preparations are a lot of work, but the results are very satisfying. I have no plan which part to spray first. In this case I start with the teeth.
I think 97% of the painting is white paint. The effect is a high contrast painting. Spraying white paint only, leaving the dark areas free is at the start a strange feeling. 
I spot out the reference lines with a fine brush and some paint. The skills for this one I learned from the old days, retouching black and white photo’s.
The final result. I sprayed a little black paint on the areas with white overspray and the areas which must be darker or pure black.