There are many diy wedding arch ideas that you can try out. It is easy to create a simple arch by using only three sticks but if you want an elaborate one you can choose 12 sticks. You can get the materials you need from lumber yard or from a hardware store. Put the sticks down and tie them together. You should lay four poles at the ground and you have to make sure that they are even. You should tie the sticks together and to make an arch. You should secure the pole together and to dig even depth holes while burying every side. If you are not at a place where you can dig, you can use wooden boxes or large buckets filled with rocks or sand to hold poles.