IMPORTANTDon't rotate the COM when posing the biped. Instead, move
the lowest spine link to adjust the position of the spine and upper body.Now that the spine is curved correctly, the arms might be out of place
again.7 Use the named selection set to select the entire spine. In the Front
viewport, scale the spine again to make the arms fall into place.
8 Check the spine again in the Left viewport to ensure it still follows the
shape of the character’s torso.
As with the legs and pelvis, you have to work back and forth between
the spine and the arms to make both fall correctly inside the mesh.
9 In the Front and Left viewports, scale the widths of the spine bones to
make them fit the mesh more closely.
Aligning the Biped to the Model | 909