I am 90% sure this is my fault, but i don't know what to do...
https://paste.ee/p/b1xCp (latest.log)
I copied the skin file from the tutorial, and uploaded it to minecraft.net.
Nothing. No ears....
(modlist is inside latestlog)

Any help? (sorry for bothering you)

Closing as this has been awaiting a response since March. If you still have issues, reply and I'll reopen.

I generally can't be expected to support OptiFine as it's a closed source mod that makes innumerable invasive changes to the rendering engine.

Does it work without OptiFine?

Ah, I'll try soon. I am switching to sodium slowly.