Write a letter

I need to do this assignment ASAP 

"Write a letter about your process of writing. Your audience is the English Dept. Composition Committee--those readers who will be going over your portfolios.

   Think about how your writing has been improving over the past semester.  You might write about a past experience with writing and how you have grown stronger as a writer through the semester or semesters....

You may write this as a letter or you might choose another format. The choice is up to you."

(I'm international student with first language of Arabic, i need to talk about my writing level before taking English 113B and how it improved, I want it simple and just talk about the writing not jop or anything out of the subject. The letter is 1 page long and 4 paragraphs. Anything u don't understand feel free to ask