First, please see the changes I have made in red. Always capitalise the word "I" (first person singular). Remember to end every sentence with the right punctuation mark. You have asked a question, so it needs to end with a question mark.
I don't know what a "pastorate" is. Is it a religious group?
The best thing for you to do is to try to write the letter yourself first, post it in the forum and then we will look at it.
Student or Learner