When adding filler flowers such as wax flower or baby's breath, it is really tempting to overdo. Too much filler and you can begin to overpower your focal flowers (in this case, the roses.)
Wire smaller sprigs of wax flower and you can have better control over just how much you put into your corsage design.
Hook the wire over a small lateral and then cover the wire with floral tape.
Keep the stems flexible and slender so they don't add a lot of bulk to your corsage or boutonniere design.
It is wise to mist your cut flowers with a flower sealant such as Finishing Touch to keep them fresh. If you are doing large quantities of corsages and boutonnieres, place them in the refrigerator if the room is warm.