With the new Clay Tag, you can change the very shape of model parts.
Tag detail adjustments allow you to fine-tune your changes.
You can even make asymmetrical changes to the models.
Right-click the model in the tag menu (upper right) → Add tag → Clay tag
Click the clay tag.
Change brush settings.
Drag the model to deform.
Strength : Controls how distinct the entire group of changes made under a single tag will be. Affects all tag adjustments at once. Stacking tags on a model has a multiplier effect on Strength, x0.5 for each tag added and x2 for each tag removed.