Take a clean glass beaker or shot glass and add 10ml jojoba or fractionated coconut oil.
Add your aromatic materials starting with the base notes and working up to the top notes.
As you add each material swirl it in the oil so it blends, smelling as you go. Record your formula as you you go along so that you do not forget anything. Always date and label your creations and store in small glass bottles.
20 drops = 1ml approx
10% fragrance will be 20 drops essential oil or absolute consisting of:
8 drops base notes
6 drops middle notes
6 drops top notes
15% fragrance will be 30 drops essential oil or absolute consisting of:
12 drops base notes
9 drops middle notes
9 drops top notes