Your life is way bigger than one relationship. Or one grade, or one job, or one choice, or one event, or one gift. Make room for all of it even when some of it will most certainly hurt.
No dating while unstable. Being responsible for someone’s heart means being prepared to treat them with respect at all times, regardless of whether they make you angry, jealous, annoyed, rejected, humiliated or heartbroken. If (a) you don’t think those things could happen or (b) think there’s a reasonable chance you’d lose your temper, then you’re not ready. And that’s okay! You’ll get there in your own time. In the meantime stay off the market.
Keep stories about younger years to tell them later: You used to call yellow “lellow” etc. Ten years from now you think you’ll remember this stuff but you won’t.
Have a yearly “review” right before school year. Raise allowance as appropriate. If they want more money, they’ll have to take on more responsibilities.
Tube first 2 or 3 years of your life I would sing to you after bath time as I was getting you in your jammies. Two songs: Oh Shenandoah and Danny Boy. Rubbing your tiny little feet with baby lotion while singing to you is one of the happiest memories of my life.