ZBrushCentral

Must I learn sketching/drawing?

Recently I started learning Zbrush Self-taught.
My aim is to sculpt likeness models for 3d printing.
I feel I am not good in anatomy and forms (not have any artistic background)
is it a good idea to go to a drawing class? does it help me to understand
anatomy better?
or the problem is sth else and I must do sth else?

any advice is highly appreciated

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