안녕하세요~

안녕하세요! 저는 줄리아 예요. 이탈리아 사람 이에요. 만나서 반갑습니다!

The word for "I" is 저. The particle is 는.

For words ending in a vowel, use "예요". For words ending in a consonant, use "이예요". The meaning is the exact same. It's just like using "a/an" in English.

There is no space used between nouns and 이다 (conjugated, for example, as 이에요/예요). The grammar is N이다 (note: no space).

The word for "Italy" is 이탈리아. The word for "Italian (person)" is 이탈리아 사람.

만나서 반갑습니다 is pronounced as "만나서 반갑슴니다". This is because of a sound change rule for pronunciation - when ㅂ comes before ㄴ, it is pronounced as ㅁ.

안녕 is kind of informal^^

Good job! (잘 하셨어요!)