I just came across this really pretty dress on Etsy. I really love vintage dresses like this: simple, but with eye-catching details. This dress even has pockets!
Alas, it is a bit small for me, but take a look at that neckline for inspiration! It looks like two rows of fabric-covered cording are appliqued at the neckline and armholes, forming that lovely geometric pattern. Adorable! You could definitely add something like this to a dress you’re making, or even an existing simple dress!