The words modern, vintage, preppy, etc. can mean very different things to different people. That is the challenge and the fun of the design process. Creating a vision and letting it evolve to meet the vision of your client, which often means many changes and revisions along the way. I think the key is to have a constant dialogue, both visually + verbally, to keep the the design vision clear in your own mind.
I have been working on designing a wedding invitation for my brother + future sister-in-law. I mentioned their color palette and my initial inspiration here. The lemon stamping is not what we ended up using, but I'll show you that round as well. I do love the lemon stamp and I'm sure I'll find many uses for it in the future. The final version is much different that the first rounds and I'm happy with how it turned out. Most importantly, my clients are really happy.
The final invitation + inserts (I changed the names/details):
click to enlarge
The early versions:
I should say that graphic design is not my forté, and now I admire all of the talented graphic designers out there so much more because it is tricky! There are so many type rules... and you just need to have that eye. My cousin Linsey was kind enough to give it a first, second, and third look. Don't worry, I'll leave it to the professionals.