Spot Color Separation using Photoshop (for screenprinter)

Someone who visit my blog ask me to write tutorial about spot color separation using Photoshop. Spot color is easier if you make your own vector graphic, but what if you want to use others graphic such as cartoon character you found on the internet to be printed on your tee? Vectorize it would be difficult for beginners because you get  JPEG format for that graphic. Here i'll explain how to separate the color to make screenprint film using Photoshop.
First make sure the graphic isn't full of noise and big enough to be printed on your tee

1. I use the "Doraemon" wallpaper for this tutorial. You can use your own.

2. Use magic wand to select one of the color

3. Go to menu Select > Similar this will make all the similar color selected

4. Right click and choose select inverse and go to channel select save selection as channel

5. Now you have a screenprint film for the color you choose. Do this to every color of the graphic

6. Now choose all of the alpha channel, and click the little arrow in the corner and choose split channels. Close all the Red, Green, and Blue channel because you don't need them anymore. Save the others.
WAY SO SIMPLE!