sorry but a) that's NOT a shoulder corsage - its a standard one and you literally threw that together. And what a waste of glue!! Really poor video from Oasis I'm afraid.
I would like to see how you do an urn arrangement with a wooden box for the urn. These don't work because the box can be so big that it covers all the foam.
It might be a good idea for light bouquets but if you have a heavy cascading bouquet with roses, the handle will break from the bouquet. The position of the foam and handle should be used the way it was designed.