Hot Glue Gun
Black Hot Glue
Plexiglass (you can use glass, but it is heavy!)
Step 1: Black Hot Glue
Step 2: Make your design
Once the design is complete roll some tape and put it on the front of your design.
Step 3: Tape design and begin drawing with hot glue
Step 4: Remove design
Step 6: Let paint dry
This picture has only a single layer of glass paint. It looks okay, but for better colors and less paint brush streaks do several layers of paint.