Although most stained glass studios don't use all of the processes that this large studio uses, parts of this information can also be incorporated into smaller art glass studios. As you can see, it is helpful to view a painted and/or stained glass image in natural light as well as using a light table. Since the window will be viewed in natural light once it is installed, it is helpful to see it and work on it in the type of light it will be eventually viewed through! It is also helpful to lay out all glass pieces together on the original pattern, then paint the smaller fine details. This is done so that painted details go from one color and piece of glass to another seamlessly. Once pieces are fired and the entire window leaded (or foiled) those painted details will look correct.
The glass cutting image below shows that you really don't need to use a fancy, expensive glass cutter! They use a regular pencil grip cutter that you can buy in a hardware store! Now, we personally like cutters that have a handle, but it only shows that you don't have to have the best, most expensive tools to create beautiful stained glass windows! Also, most studios don't have large copiers on site but a lot of copy centers do!
Another interesting method that they use in their studio: creating shading in certain areas by using flashed glass and etching it with acid. Working with acid is dangerous but perhaps the same effects (or close to the same effects) may be achieved by sandblasting or by using products such as Armour Etch on flashed glass.