I love blooms, I'd never really used them before but now I'm addicted to them.
You can just stick the middles and bring the petals up to look like really nice flowers, giving your card that little bit of 3D.
I've also used stickles and tiny rhinestones to look like the centers of flowers aswell.
They just add that litle something extra and you can buy packs which have 25 in for 65p (angel kisses) which are a real bargain, small tubs of small blooms for 2 pound odd with about 80 in, or lovely big glass jars of them for 5.99 which have loads and loads in......I stopped counting after a while!!