Wedding Cake Cookies by Martha Stewart Weddings...
I have a thing for Tiffany BLue... and I love this little inspiration board by Kinser Event Company that features this little DIY wedding cake. I'm not this good myself and I actually like to bake so this cake maybe a stretch for some people, but I think you could make a small two layer cake with Tiffany Blue swirled butter cream and decorate it with small white flowers and have something really lovely.
The cookies above were suggested as a "make before hand", DIY wedding favor. They are darling, but if you're decorating cookies this complicated, I hope you only have a dozen people in your wedding party :) Do I sound lazy? I am. Still, it's a lotta pretty!
For more examples of very sweet DIY cakes... VISIT this post at A Paper Proposal.