I'm so exciting. excited ("I'm so exciting" = you are an exciting person; "I'm excited" = You are excited)

오랜만에 영어 작문을 쓴다. 언어는 지속적인 연습이 필요한데 너무 오랫동안 손을 놓고 있어서 잘 쓸 수 있을지 걱정이다.

I write English Essay. Learning  To learn a language you/me/one  Llanguage need to continuously practice but I've done noting for a long time. (Very nicely written! You can choose "you" "me" or "one" they all work).
So I worry about writing English well.

오늘은 특별한 이야기가 없지만, 그냥 글을 쓰고 싶어서 몇자 적어 보았다.

Although There is noting special today, I just write down here.

I think you did a very good job, even though you have not written in long time.

:-)