Very good point on drops--work very well for small amounts and testing flavors.
When looking at supplies the syringe I use the most is 1cc for accurate drop/ml.
using a 1ml syringe--remove the plunger, place cap or finger over other end of syringe. add 1 drop at a time until you reach the .1 ml mark. # drops x10= drops/ml. it really not too hard, I promise.
When I first started I only mixed in small amount and as my confidence grew, I began mixing in larger quantities.
I think mixing is easy to make too complicated (in the beginning).
Honestly, when I first started mixing I tried to keep things as simple as possible. I would put 1ml of PG (easiest to mix with in the beginning due to consitency)-- and add just a couple drops of flavoring at a time until the right flavor.
I started with the premixed flavors--fruit flavors or coffee flavors and would use flavoring to enhance the premixed and then moved to making my own creations.
now that we have scared you away from mixing......
It really isn't too hard, alot of trial and error.
if I can do it, anybody can !!!!