Making brake lines

I’m doing a brake line repair right now on my truck, and it got me thinking about if there is a better way to do it.

Post up any tips, tricks, or advice on making your own brake lines. Specifically getting a good double flare using a flaring tool. Show your related tools and tips on using them.
There’s a ton of youtube videos on this topic but I was curious what the members here have to say on the subject.
I found this video helpful and he mentions a couple things I hadn’t heard before.