Help making a pull request

This may sound basic but I made some small changes to the engine and would like to send them. Problem I only used git to make simple push and pull things at work in small projects, I’m not used to work with different branches and can’t find a good tutorial on how to make a pull request.
Only one I found is this one: Trello
But it seem to be outdated or not very clear because I can’t find some of the buttons that are being mentioned.

This is what I’ve changed btw, I added CustomDepth support to the Cable Component, a one line thing:

If someone wants to add it themselves, please go on. But it would be nice if someone could tell me how to do it myself because I intend to help with more in the future :slight_smile: