We need a tutorial for how to change block textures using blockstates for 1.20.1

Hello everyone,

I would like to point out that perhaps modifying block textures using blockstates should already be considered a feature. Throughout these years with MCreator, it has always been necessary to search for tutorials using code on how to alter the texture, especially in the early stages. When I was a novice, I would simply duplicate blocks, but this only generates more work and can sometimes complicate rather than simplify matters. After discovering the possibility of altering textures with blockstates, I never wanted to use another method again. However, I haven't needed to do that, until now.

I have tried searching, but unfortunately, I have not found any updated tutorials for 1.20.1 that clarify how to make this modification. If you know how, please bless me with your knowledge, and Klemen, if you're reading this, please consider adding this feature to MCreator in the future.