How to DIY a 24inch double bubble balloon ? how to inflate balloon onto balloon ?

Balloons from https://www.amazon.com/dp/B08P1PHSYD?ref=myi_title_dp
This Kit Content:
Bubble Balloon X 2pcs (get 2 extra free each pack)
Latex pearl balloons 5inch : Silver x 4 ;Yellow x 4.
Latex pearl balloons 10inch:Black x 4;White x 4
Gold ribbon x 2
Black ribbon x 2
Gold foil tassel X 5pcs/pack
Rubber band X 6pcs
Plastic tube X 2pack

DIY difficulty index: 5 start
DIY time about 10 minutes
Recommended Use：Electric Balloon Pump

Recommended
10" easy blow up bubble balloon
https://www.amazon.com/dp/B08P1KS7T3/ref=twister_B08P1JRF7H?_encoding=UTF8&psc=1

Self-sealing bubble balloon
https://www.amazon.com/dp/B08P1R2VRC?ref=myi_title_dp

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