Weddingbee boards

I am going absolutely crazy trying to come up with a design set for our wedding stationery (invites, rsvp cards, etc.). I've been messing around hard core in Adobe Illustrator for the past week now and I can't seem to come up with anything that fits. We're looking for a vintage meets modern feel. The wedding will take place on a white terrace over looking a small pond. The color scheme that we are going with is turquoise (or a shade lighter), white, and black. We're going with flower seed favors so a flower/garden theme for the wedding. It won't be real upscale but it won't be exactly casual either. Does anyone have any ideas, suggestions, or examples that they think might fit our theme? Thank you so much!!!