On the wedding day, we always take charge of pinning boutonnieres on the gentlemen. It's come to my attention though, over and over, that this a daunting task for many! Once you pin a few, you'll be a seasoned pro. I like to always use two straight pins, one going down into the stem, and one pointing up to give the boutonniere extra security to stay in place. This video only shows pinning with one straight pin, but is a good, quick reference for anyone who may have this task at a wedding.