Congrats. Good advice above. The best being that you’ll make mistakes. Learn from them. You can’t recover lost time. When my first child was born, my father simply said “You’re a father now. Don’t make me remind you.” I’ve always tried to remember that bit of advice.
Congrats, the sense of pride and purpose is evident on your face.
I remember when I could hold my two boys like that so enjoy it while you can, now they are both my size or bigger and would choke me out sitting on me.