Clear out a space in the garage that's large enough for a stained-glass workshop. You will need at least a space of about 5 by 10 feet.
Set up two tables for the stained-glass workshop. Each table should be at least 30 by 62 inches. Use the first table for designing stained-glass pieces. Also use this table for assembly, foiling and soldering. The second table is for cutting and scoring.
Add some cabinet or other storage space to the stained-glass workshop. Some supplies you need to store include glass, soldering, cutting and scoring tools and foil, as well as other tools and supplies.
Invest in additional lighting. One light in the center of the garage will not be enough. The shadows created by a single light would inhibit your work. Instead, use spot or track lighting above the work areas to illuminate the entire space.