Translation of verfassen

I will be visiting in Italy from April 10 to 15 in order to meet some old friends. I'd like you to attend a one-day course, maybe I can help you in learning something new. Please give it a try.
In plural there is no difference between the formal and the colloquial address form. Do you mean that you are using 3rd person singular form for the plural imperative? If so, I will change all entries so far.
If you do write lyrics in German, I will correct them and if you have any questions in German, I will answer them as well. What do you think about that? I wish you a beautiful day.