In overhead views, artists tend to remember the face as a flat symbol instead of a turning volume. The forehead dominates more than expected, the lower forms compress, and the far side often disappears faster than memory suggests.
That is why a top-down face reference is useful.
When the camera rises above the head:
If you ignore those changes, the head stops feeling believable.
Before rendering details, check whether the large planes read clearly:
If those surfaces make sense, the angle is usually solid enough to finish.
This makes it easier to understand the angle instead of copying the silhouette.
Open FaceRef and set an intentional top-down pitch instead of hunting for random photo packs.