I've recently finished "Character Asset Creation for Games: Shoes" tutorial by Sander Flisijn, that I can only recommend.
https://www.artstation.com/marketplace/p/byvy/character-asset-creation-for-games-shoes
These shoes are the final result.
I've made two texture sets: one for the brand new shoes and one for the worn shoes.
New shoes turntable
Old shoes turntable