1, cut the cardboard into circles first.
2. Then draw an equally divided arc.
3. Then color.
4. paste the name of the prize on it.
5. Then make a pointer.
6. Color the pointer.
7. Stick the fingertip gyro on the big disc.
8. Stick the pointer on the fingertip gyro.
9. Stick a square cardboard with the same diameter as the CD on it.