Make a pair of tripods out of six of the bamboo canes. Join the ends of the canes with bailing wire. Stick the ends into the ground allowing 8 inches among each cane. Position the two tripods 5 feet apart. Place another cane between the tops of the two tripods and fix in place with bailing wire.
Cut two 2-by-10-foot sections of chicken wire with the tin snips. Curl each section around one of the tripods. Join the chicken wire at each edge and to the canes with twists of bailing wire. There will be an excess of roughly 5 feet sticking out above each tripod.
Bend the excess section towards each other and join the end with more bailing wire. Weave willow cane through these sections to reinforce them.
Weave flowers, blossoming branches or other decorative materials through the chicken wire. Add fresh flowers at the last minute to insure they will still be fresh for the big day. Make sure all the chicken wire is well concealed.
Secure the arch if there are strong winds. Tie two strings to the top of each tripod and pull them out at taut diagonals away from the sides and affix to tent pegs pressed into the ground. Make sure they are positioned so that no one will trip on them during the ceremony. Tie ribbons or loop flowers around the strings to help make them visible.