I have created my own essential oil blending dilution chart that you can access by clicking on the link below. My chart provides general dilution rate guidelines, as well on top, middle, and base note ratios. A well balanced essential oil blend usually is made up of 3 top notes, 2 middle notes, and 1 base note per one ounce of carrier. If you have any questions or comments you would like to send me, you can reach me by email at lynmariearomatics@gmail.com. I'd love to receive feedback!