You should be proud! Knitting is not a competitive sport (well it probably is somewhere), and I think you’d be hard pressed to find any one of us here who doesn’t love to see people learning new stuff.

Cables look a lot more complicated than they are, so a lot of people find them very intimidating and go a long way in their knitting career without daring to take the plunge. But you did it! And it looks like you’ve got the hang of it pretty easily too, once you found the info in the format you need. Nice one!