Draft a defense or a challenge with at least two reasons for your opinion. Make sure you have a main idea sentence for your opinion. Writing a draft first, then revising and editing, will help you to better organize your thoughts. Then, edit for capitalization, spelling, and punctuation. Defense or Challenge: People over 21 may legally carry concealed handguns, but do you think they should be allowed to bring them into a college? Write your opinion with a main idea sentence, two valid reasons, and a concluding sentence (minimum 4 sentences).