Yo I know I'm 16 and I started 5 years ago and that's not really interesting but there's a few things I wanna tell to 11 years old me.
Hi, you're 11 years old now and your parents finally agreed to let you go to a music school. You're really lucky. If it was today you wouldn't be that lucky. Your days in that school will be the best days of your life. Your mates will become your best friends ever. You'll find friends for life there. You will be one of those kids that have just one lesson per week, but you will go to the studio everyday. The best moments in your life will be when you open the school's studio's door and you look around you and you see so many instruments or when you find your best friends there. You'll love those days
Live every day as if it was the last because there will actually be a last day. Yeah, I know that makes you feel very sad. But don't worry, you will live 3 amazing years, almost 4.
Buy a metronome. Start practicing exercises with it. Right now it sounds stupid to you, you're like, who the hell needs that?. But believe me, it will make a difference. Please do it. If you don't, when you're 16 you'll regret that.
Try to learn harder songs. Your teacher will give you easy songs to play, and you'll learn them in 20 minutes. Because of that, you'll think that you are really good. So try to learn harder songs. That is probably the only bad part about your teacher is that he gives you too easy songs. Try to play harder songs.
As you have your lessons you'll learn fast and you'll join in the school's official band. That will be an amazing experience for you. Your mates are your best friends and you'll play in cool places in the city. But just because of that, it doesn't mean that you're the best ever. Remember that there's other people in the school trying to learn guitar too. Try to help them as many times as you can. Once again, being in that band doesn't mean you're the best. Try to help others and stop being kinda stupid.
One day the school will close, your teacher will move to Canada and some of your mates will move too. You'll be kinda lonely and you'll think what the hell am I going to do now? I don't have gigs now.
Don't give up.
Lastly, be more confident with the world outside of the music school. Don't be always trying to look cool to other people. Look cool to yourself.
Be happy. You're too happy that sometimes it annoys people, so because of that, be even happier. You're a great kid. You have an amazing passion for music. You'll spend entire days playing guitar. You'll spend entire nights playing guitar. Sometimes will be raining a lot and there you go with your guitar walking like 4km to have you guitar class or to jam with your friends. Your other friends will invite you to party's and to go out and you'll say no because you have to do something but what you'll really do is play guitar. You'll do crazy things for music, you'll look too crazy, but don't worry, you're doing it right.