1a. Cut a rectangle from the foil origami paper (thicker paper) using the dimensions shown on the download.
1b. Turn right-side down. Add a strip of double-sided tape to the long edge of the rectangle.
1c. Using a hot glue stick, roll the paper into a cylinder starting with the empty long edge and rolling towards the tape side. (Don't wrap too tightly or the tube will not come off the hot glue stick.) Make sure the edge is sealed.
1d. Leave on the hot glue stick and set aside.
2a. Cut shapes one and two per the download file below from the metallic cello. (You can cut them both from the same sheet or pick two different colors).
2b. Cut slots in each of the two shapes 1/8" apart as shown by the dashed lines on the download. in shape one, the slots are 2 3/4" long centered from top to bottom, but in shape two, the slots should go all the way to the edge as shown.
3a. Cut or tear small pieces of double-stick tape to fit tabs on shape one.
3b. Using the tube that you made in step one still on your hot glue stick, slowly and as tightly as possible, wrap the left side of the shape around the left end of the tube.
3c. Like step 3b, compress shape one so that you can wrap the right side of the shape around the right side of the tube from step one.
4a. Cut or tear small pieces of double-stick tape to fit both the tab and the opposite end of shape two as shown.
4b. Using the non-tab tape section, attach shape two to the left end of your tube over shape one. You can pull the right end of shape one off of the tube to give you more room. wrap shape two around shape one and seal with the second piece of double-stick tape on the tab.
5a. With your metallic thread and needle, carefully twist through the tube and shape one and pull thread through. Do not squish tube.
5b. Knot the two ends of thread and trim ends as needed.
For storage, you can pull the bottom end of shapes one and two off of the tube to make a long cylinder. Protect in paper or cardboard to prevent squishing.