To be more precise, you should look above the left headlight assembly, near the power steering pump.
Here's a quick guide to help you find it:
1. Open the hood of your BMW 328i.
2. Look on the driver's side of the engine compartment, towards the front.
3. Locate the power steering pump, which is usually a round metal unit.
4. The power steering reservoir will be positioned above or nearby the pump. It's a small, rectangular container with a black cap.
Important Note: It's always a good idea to consult your owner's manual for specific instructions on locating the power steering reservoir for your specific vehicle model.