Make sure the oils you are using is non-comedogenic. I think the original mix of OCM with the olive oil isn't the best and may clog your pores. Based on olive oil has a level of 2, while jojoba has 1 and sunflower 0.
The lower the level the better.

Castor oil - 1. Good
Olive oil - 2. Okay
Sunflower oil - 0. Very good
Jojoba oil - 1. Good