You cannot start working it out unless you know the concentration of your nic juice. It's sold in all kinds of concentrations from 24 mg/ml to 100 mg/ml. Once you know that, someone on ECF will tell you how much to add and where the juice calculators are.
Handle your nic juice very carefully. In the higher concentrations, it is a poison and easily absorbed by the skin. Wear latex gloves, and follow safe lab procedures. For instance, how do you plan to measure it? Pipette, syringe, graduated cylinder, eyedropper, weighing? You won't be needing much for 10 ml of liquid, so don't use a 50 ml syringe to measure out a few ml. of nic juice. You will need a smaller syringe with higher scale resolution.
I am deliberately leaving out the details, because you first need to find out what you have. This may all sound like tech speak meant to confuse you. Actually, mixing is quite easy, but you do need some basic liquid measuring stuff and be aware of how to handle nic. There is plenty of information on the forum to help you.