I really like the concept of using embeds with a fragrance that compliments the fragrance in the overpour. I think it ends up smelling different than if you simply blended the fragrances together—the scents seem…crisper, more pronounced.
I also like the idea of using leftovers.
Citrus Bang Beach Bars have embeds leftover from my Verbena Beach Bars (lemon verbena, holy basil, may chang, bergamot, grapefruit and ginger essential oils). The annatto-orange is an overpour fragranced with orange, may chang, peppermint, eucalyptus, rosemary essential oils and a little spearmint fragrance oil.
Update on my Yet-Untitled-Cozy-Mystery: I've come up with a bunch of titles—not ready to share with you, gentle readers, but have submitted them to my writing workshop. Looking forward to getting feedback.