WOOHYUN:

Do you know? The spring is coming! I'm exciting. Because, In spring, we go up to the next grade. I'm little nervous,but It may fun. And new teacher will teach us! I wonder who will my teacher. Also, I will meet new friends.
It is fun to have new grade,teacher,friends. I will become sixth grade in a week. I'm looking foward about it.
And, I will have a test. So I have to study hard. But it's okay.
Do you like spring?

CORRECT:

Spring is coming! I'm excited.  In spring, we will be in the higher grade. I'm little bit nervous, but it will be fun. We will have a  new teacher again! I wonder who will be  my teacher.  I  will  also meet new friends.
It is fun to be in a higher grade, to have a new teacher, and friends. I will be in the  sixth grade next week. I'm looking forward to it.
And, I will be having  a test. So I have to study hard. But it's okay.
I like spring! How about you, do you like spring?

>>Use the future tense of the verb since the action is for the future.
>>The correct spelling of the word forward.
>> Spring refers to a season of the year.
>> Exciting and  excited  both are adjectives but different in usage.
-- Exciting means making you feel very happy and interested. e.g. Spring is coming. How exciting!
--Excited means feeling very happy and interested, or showing this. e.g. Spring is coming. I'm excited! (describes how happy you are for the coming season.

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