Here's what I'm going for

Here's my model to do just that

Hello, I just tested with another resource pack and overriding the item model worked as expected.
Can you send me your resource pack? And your client's log?

Yeah sure, been trying at this for a while probably my fault but I can't figure out what I'm doing wrong
resources.zip

Well, it worked

Odd I'm not sure why it doesn't work for me

Thank you for helping me figure this out

Probably because you're playing with canvas, I'll test compatibility with it right now. Will update you on the other issue.