I never measure this out but I use the Jojoba oil as the base and add a few drops of all the essential oils to it.
You really could use whatever essential oils you like here. I chose these particular essential oils for anti-aging. I mix a batch of this up and use just a drop or two daily, if not twice a day, on clean skin. It really goes a long way.
I have also mixed a few drops in my hand with a little bit of lotion to help it spread easier on elbows, neck and legs. I love the eucalyptus and lavender oil for their potent smell of freshness. I somehow have good memories of these two smells.