When working with a projector it is a great help to have an image already separated into the number of colours that is convenient to work with.
That can be done using Photoshops Save for Web option with its GIF generator. I describe how to use that at this link:
As you can see I have made a palet with all the colors beneath the image. Each color has a number to write on the paint palet so you know which color you are working with.
I have made a layer in the Photoshop document for each color so one layer only have one color in it. To be able to see the layers more clearly I have changed the color to white on all the layers.
I have inserted a black layer between the image and the separated color layers so I only have one white layer on a black background when projecting.
If you would like to download my Photoshop file to see how I have organised the layers click here:
See how to do it at this link: