Remove the plastic cover over the ignition wires (6 torx bolts) and also remove the plastic upper timing belt cover (remove 12 mm bolt then slide the cover direct up.
You may be able to see where the oil is coming from. You may find that a camshaft oil seal, the oil filler neck, or the oil vapor tube is leaking. Also look at the rear (drivers side) of the engine where the cam position sensor is. The oil may be traveling some distance from the point of the leak to where you are seeing it.
If your crankcase vent system is clogged you will need to clean it very thoroughly as this can cause lots of pressure which will force oil to leak.
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