Find a box bigger than your bouquet
Fill inside the parameter of the box with crumpled up packing paper. This is important to keep your bouquet from moving around inside the box during shipping.
Wrap the stems of your bouquet with paper towels. Tightly wrap a rubber band around the paper towels.
Submerge stems in water until the paper towel is completely soaked.
Place a ziplock back around stems and secure tightly with more rubber bands. It is important that you secure this tightly so that no water can leak from the bag causing your leaves or petals to get wet. This can cause molding or wilting.
Place your bouquet upright in the box. Be sure the packing paper is dense enough to hold it securely in place. This step is very important. You do not want the bouquet flopping around in the box.
Wrap the entire bouquet in more paper towels ensuring that it is completely covered.
Place more packing paper on top of the bouquet making sure not to press down too hard.