Dear little brother,
Since the day you were born, I knew we would be great friends, if not the best of friends. There's not a day that goes by that I don't think about you in some form or fashion, whether it's because I'm worried about you or because you annoyed me. No matter what, though, I will always love you.
We get at each other's throats from time to time, neither one of us wanting to admit that we were in the wrong when the fight happens. After one of us cools down, normally it's myself, one apologizes to the other for the fight and we hug tightly. We have different viewpoints on many things, but we always listen to one another, even though sometimes we really do not want to.
I know that you will always have my back and that you'll be there for me when I need help or a shoulder to cry on when I don't want to go to anyone else. I hope that you know that I, too, will always be by your side and have your back whenever you need me. If there is ever a person who is causing you grief, just let me know and I will take care of them for you, or just be your ear and shoulder to cry on if need be. I know for a fact, though, you would most definitely take care of someone who is causing me to be upset. You really do not like seeing your big sister upset.
Just like the time when you and our mom helped me on move-out day my freshman year and you were about to heave a rock you had found on the ground at the boy who had broken my heart right before we left. I did not even know that you had thought about doing so until much later and as bad as it sounds, I was really happy that you were that protective of me.
You enjoy the fact that you much taller than I am, claiming that you are really my "big brother" just for that fact. It is rather amusing, though, listening to you boast at being the tallest in our family now, but occasionally it can be a bit annoying, seeing that I am the shortest. Not wanting to continuously explain, like the nerd I am, I decided to call you my little, big brother and it just stuck.
As I write this, I realize that you are now a legal adult, though not completely legal to do most things. I feel really old but really happy that you have grown to be such a great, funny, amazing young man. My main wish for you is that you continue to be a good person and follow your heart and dream of working with wood. You are extremely talented at what you do with your hands and a piece of wood, and though you make mistakes, you learn from them and make what you are working on even better than before. Don't even give up on your passion.
No matter what has happened or will happen, I will always love you and stand by your side. I will always support your decisions and be there for you when you realize you made the wrong choice for something. Whenever you need me, I will always be there.
Love you always and forever,
Your big "little" sister.