Michelle, my name is Brian and I will also start Junior year at my high school as well.
I can say this, BE YOURSELF.
Don't act stupid, don't change yourself; from your personality. to how you act, don't change YOU.
You must be a very charming young girl and I admire your courage to ask this question. It proves to me that you're not shy at all [: That's one step completed. Act natural Michelle, people will find it easier to talk with you if you don't pretend to be someone else.
I would love to be your friend, if I can.
I always need a friend that I can communicate with, share my feelings, be chill, be fun, be friends.
Talk about your hobbies,
your likes and dislikes for example: Myself, I like to play football and what I like the most is watching Spongebob with my nephew and what I hate the most is are Scene Kids hahahaha.
Be friendly, always smile and say hello. Most people, when you first meet them or vice versa, they make a first impression of you: This person is nice, he says hello and smiles or oh no, this guy walks like a drunk and he acts rough. Once again (I'm sorry) act yourself.