Setting up for reference photos and trying out different lights that I had laying around with a shower curtain diffuser. Used a black blanket as a backdrop. The pictures came out surprisingly well.

Capturing the profile of my model with DaVinci Eye.

Life sized ear. SketchFab 3D Photogrammetry scan of the clay model. (https://skfb.ly/oR97K)

Roughish life sized mouth assignment. A couple of pictures of it next to my first attempt that looked more like Shrek.

@Sujanith Tottempudi There's a "Head Model" app that's useful. Stock photo's sites are also useful. Another possibility is to try 3D scanning a model. I've used the KIRI Engine app. I think iphones have that capability now.

Large Nose Study: 3D Model: https://skfb.ly/oQ9Wn

3D Skull Model: https://skfb.ly/oQsUp

3D model : https://skfb.ly/oQrTS

3D Model of the Skull: https://sketchfab.com/3d-models/large-skull-clay-maquet-fcb8a2dd244645e1aa96eebab459e357

Scanner also struggled with the eyebrow :D SketchFab 3D model: https //sketchfab.com/3d-models/large-eye-3d-model-00e60442dea94c828b08149ea1abd74d