More Skin Tips—Mirror Mode and Always Deform

Mirror Mode

If vertices are red on one side, but blue or green on the other,
adjust the threshold until all are blue/green on both sides.

 

Paste one side to the other starting with whichever color is already complete ... in this case, the GREEN side is right.

Paste green to blue bones ... then,

Paste green to blue verts.

Now, vertices on both sides are weighted the same:

Test by selecting comparable vertices on each side and check their values in the weight table. Let’s start with activating the right upper arm envelope and selecting a vert:

 

 

The value is 1.000:

Now select the left upper are and the corresponding vert:

The value us the same, 1.000: