On a side note, I want to marry her cheekbones. Aren't they gorgeous?
To start, agencies do not want to see fancy makeup skills or fancy lighting or heavy retouching. They only care about the model and a true representation of her or him. They want a clean, fresh look to see the "blank canvas."
They also want front and profile views of the model and full length views in tight clothes or a bathing suit. That's all you need to start.
The sample images here are the headshots: one profile (ish) and one facing camera.