Gather balloons in your chosen colors and sizes
Gather a balloon pump, balloon strip or fishing line, tape, scissors, and hooks or command strips
Inflate balloons to varying sizes for a fuller look
Tie balloons securely
Group balloons into pairs
Twist pairs together to make balloon clusters
Attach clusters to the balloon strip or fishing line
Alternate balloon sizes and colors as you build the arch
Fill gaps with smaller balloons
Secure the arch to your frame, wall, or stand
Adjust balloon placement until the arch looks balanced
Trim any excess strip or line
Check that all balloons are firmly attached before display