OK I really like the colors and the font.. I agree with some of the other girls in making the wedding date more of a focus.
Would you consider just having the date in large font, centered, underneath your names??
Also where it says 'formal invitation to follow' it would look cool if it could be centered at the bottom in between the leaves rather than on the side.
I think its going to be beautiful, whatever you choose to do. Hopefully my input helps!