First Korean Paragraph (kinda)

안녕하세요. 제이름은하나입니다. 만나서반갑습니다. 어떻게지내세요? 잘지내요. 당신은요? 

어제 오빠의 팔이 부러졌어요.

Hello. My name is Hannah. Nice to meet you. How are you? I'm fine. And you? Yesterday my brother broke his arm.

Please tell me if I wrote anything wrong and if i didn't do a single thing correctly. Thanks!