Visual Effects Deformers: Creating Mirrored Blend Shapes

In this tutorial, I've learnt to mirror the blendshapes to affect the eyebrows.

Duplicating The Head And Moving The Vertices Around The Eyebrow Area

Duplicating The Head And Mirroring It To Affect The Eyebrow On The Other Side 

Rearranging The Input For The Blednshape To Work Properly Without Affecting The Skinning

After Blendshaping

Original Placing of Eyebrows

Eyebrows Moved

Though it is not required but I did a short playblast to show the different facial expression by keying the new blend shaped eyebrows and the jaws.