For my troll i sanded it down with 150 grit sand paper and then used a spray paint primer. I followed up with my own paint mix I use acrylic paint mixed with baking soda as it gives it a textured feel. The baking soda is not needed tho it will not be a smooth finish if that's what you are looking for. After around 3 to 4 layers of paint I apply 2 layers of 2 part epoxy this creates a very strong layer preventing chips. I followed that up with a laquer 2 to 3 coats of that. Its alot of work but its worth it imo. Lmk if there's anything I can do to help! 👍
