T-Shirt
Armhole
Name the armhole, then ask for the shape you want. The same request works in pattern terms or relative to the armhole landmarks on the avatar.
Control points
Four points shape the armhole:
Move or align these relative to each other, and the armhole shape follows.
Examples
How to prompt
Say armhole or underarm, then the change: straight and aligned, tilted for a boxy shoulder, going out for a boxier body, or lower the underarm. Name the point when it helps (top, front, bottom, back). Landmarks such as armhole top, front, bottom, and back are the shared names when you think in 3D. See Body Landmarks for the full map.