What happens next?

How to apply foundation for a natural makeup look on olive complexion
Look at your skin.
Is your skin a little more on the dark side or the light side? Once you figure this out, it will be easier to choose the perfect colour of foundation.
Choose a foundation.
If your skin is on the lighter side, choose a foundation that is on the lighter side, and opposite if your skin is dark. Remember: it's always easier to make your facial makeup darker, but it's hard to make it lighter.