HELP! Silicone Mold Making : r/moldmaking

How would I go about making a *better* mold of these parts? 3D

Mold Release & Conditioner

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1.75 Inch Holographic Skull Earrings Silicone Mold for Resin

Cast-A-Mold 25T Rtv – Liquid Silicone Mold Making Rubber for

Basics of Mold Making Tutorials by Smooth-On, Inc.

Resin Mold Kit: Mold Making Material 32 oz: Free US Delivery

Liquid Silicone Rubber for Mould Making » Silicone Moulds