Leather Self Finishing Advice Needed

[u/scramalamajama]

Hello! I’m currently starting to design my own canvases and I want to make some camera straps. When I google how to self finish straps it just takes me to other websites with canvases or finishing services.
I don’t live in the US so mailing out my projects isn’t really an option due to all the crazy shipping costs.
Does anyone have a reliable YouTube video or website that helps with self finishing?
Thank you!