Ribs look great!
You did awesome for your first try. My first was total disaster. I like the rub you picked for the ribs. If you are able to get apps for your phone etc, weber has a phone app that has recipes. There is one on there that is called basic rib rub. It's exactly that and it gives you a good foundation to start from. Add what you like to it to fit your taste as you play with it. Best of luck on your future cooks!
50 year Old Imperial Kamado with ears.
Fire pit. Weber Kettle.