Feather flowers are going to be the stars of 2013. There are some amazing designs out there already that include organza or silk with Swarovski detailing and a feature vintage Marcasite or crystal brooch. Look out for the Coq feathers!
Whichever way you decide to go with your flowers, a lovely idea is to try and tie your whole theme together so if you're going for roses, then have a rose design featured somewhere within your headdress. Look out for a company who can work with you and your designs and most importantly your budget to create that one_off, bespoke creation just for you.