How do you say this in Korean?

[Mi ^-^]

The answers before me already translated it (idk if it's right) I'm just going to write it in hangeul...
I don't think it would be nice to write it romanized XD It's like writing English in Hangeul letters...
ㅠ우댄트라익싯, 라잍? (you wouldn't like this, right?)
Soo~

Hello! Annyeonghaseyo = 안녕하세요! (formal) or just Annyeong = 안녕! (but don't use that on older people or strangers so NO)

I'm Ariesya.
(ahrisya = 아리샤 = Your name, Koreanized, I think XD just write Ariesya) 입니다.
Ariesya imnida.

Nice to meet you ^^
만나서 반갑습니다 (VERY formal) = mannaseo bangabseumnida
만나서 반가워요 (semi formal, so use THIS) = mannaseo bangaweoyo

Good night everyone!
요러본, 안녕히 조모세요! (formal) = Yoreobun, annyeonghi jomosaeyo!
요러분, 잘자요! (informal, so use this for your younger friends) = Yoreobun, jaljayo!

I'm 14 years old.
저는 열네살 쌀이에요. ( or 쌀입니다 = ssal imnida)
= jeoneun yeolnaesal ssal ieyo.
Please take care of me.
잘 부탁드릅니다. = jal butak deureumnida

I'm sorry for not speaking Korean well. (or rather, I'm sorry. I can't speak Korean very well.)
죄송합닏다, 한국말 잘 못해요. = jwisonghamnida, hangungmal jal mothaeyo.

I'm from Malaysia.
저는 말레이시아이에요. = jeoneun mallaeisia ieyo.

Can you teach me how to speak Korean? - idk XD