Starting a candle balloon

Its a amazing Asian tradition to start candle balloons at any festivals.
Here the instruction:
Step 1
Cut the plastic and heat-seal the edges. Layout your materials on a large sheet cardboard. Pull out approximately 6 feet of the painter's plastic and cut it forming a sheet 9 x 6 ft. It's important to have plastic that is 1/2 mil (12 microns) or thinner. Thicker plastic is too heavy to fly.
Step 2
Melt candles together and attach them to balsa. Again, an electric hot knife makes this step a breeze. A heated fork can achieve the same results. Make sure to do both sides.
Step 3
Assemble the balsa frame. Make an "H" with the 36 in balsa and candle piece and two 3/16 x 1/8 x 30 in balsa sticks. Make the joints with a small piece of clear tape.