The bouquets your attendants carry should be identical. To set your maid of honor apart, you might want to vary the style or color slightly.

The men in the wedding party should wear boutonnieres. They should be worn on the left lapel. The groom's boutonniere should differ from the groomsmens'.

Don't forget corsages for the mothers and grandmothers. They need not be identical, but should be coordinated with the color of their dresses.