No, I didn’t watch any videos. I just freehanded the feather onto the leather with a soft lead pencil.
I haven’t done much carving, that’s like my third try, but I did inherit a 1/4” angled swivel knife blade, and I have noticed that it makes smaller carvings WAYYY easier, than trying to do it with a 1/2” knife.
One thing I do, I don’t know if it’s common or not, I’ll draw a template of the area I have to work with and copy a bunch of them onto a piece of paper. Then I can work through different layouts and things before I get to the leather.