as posted before get yourself some PG or VG liquid to mix with the Nicotine.
best and easiest way is to get a 50ml bottle with a drip tip on it and mix yourself a base at say 10mg,
in your case that will be 20% (200 drops) nicotine and 80%(800 drops) PG or VG.
then you can just drop liquid into small amounts (5ml max) and start finding out what percentage flavor works for you.
best to start small e.g 1 drop flavor to 1ml nic liquid (the base you made).
PG = Propylene Glycol (must be of food grade) advantage of PG is better flavored Ejuice,
Disadvantage is there is less vapor.
VG= Vegetable Glycerin (must be of food grade) advantage of VG is high vapor,
Disadvantage is less flavor also VG is very sweet tasting.
most people mix there juice 80% PG and 20% VG to get the best of both worlds.
please be careful when experimenting with nicotine and never buy any flavors that contain oils.