My happy summer vacation plan!!! ^-^
First, I will join a camp that is organized by our church. My friends will also join there too. It will be very fun. After the summer church camp, I will go to my cousin Yue Jun's house. She lives with my grandmother and aunt. Yue Jun also has a dog called Arang. I really like that dog. It is small and cute. She lives in Seol so me and my mom still take a highway bus or a train to go there. I am really excited about it. I will bring my games to play with Yue Jun.
I will also study on my vacation. I will study math by solving math problems and Korea, social study, science by reading books. I will improve a lot. ^^!

Julie: First, I will join a camp that is held in the church.
Correct: First, I will join a camp that is organized by our church.
Explanation: When you say will be held in the church, it means that the camp will happen in the church. Since the church planned for the camp, then you can use the word organize.

Hi Julie! Don't forget to capitalize the first letter of the word after a period. Good job!:)