> For the complete documentation index, see [llms.txt](https://docs.metahumansdk.io/service-apis-for-creating-virtual-avatars/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.metahumansdk.io/service-apis-for-creating-virtual-avatars/api-methods/3d-face-reconstruction/bad-case-examples.md).
# Bad Case Examples
## 1. Multiple faces in the photo
If there are several people in the photo, the service will choose a random face.
Even if the face is blurry or if there flashes appear somewhere in the background, it can be selected.
{% hint style="warning" %}
Note: Please send a photo of one person.
{% endhint %}
## 2. Extreme emotions
Strong emotions that distort the face can affect the quality of the reconstruction.
{% hint style="warning" %}
Note: The best result will be with a neutral facial emotion.
{% endhint %}
## 3. Strong head angle
If the face is not fully visible, artifacts may appear on the texture.
{% hint style="warning" %}
Note: The face should not be a full face and not covered by foreign objects.
{% endhint %}
## 4. Hard shadows on the face
Complex lighting with hard shadows spoils the texture.
{% hint style="warning" %}
Note: Lighting should not have hard drops and shadows.
{% endhint %}
## 5. Colored lighting
Colored lighting will repaint the skin color.
{% hint style="warning" %}
Note: The photo should have neutral lighting. Otherwise the skin color will be unrealistic.
{% endhint %}