Also worth pointing out that this is a very interesting and complex field of scholarly debate, and there absolutely is disagreement on what is 'propaganda' and if Horace is pro-, anti-, pro-and-anti- Augustus anyway, so it is tricky.
Read beyond the lines of the poem to detect any hidden meanings. One theme that appears is propaganda. Read more on the subjects of foreign politics and Augustus and Horace then make some brief short notes. Look for any background historical clues in particular for example about life etc. Go to your campus library tomorrow and see which books are on offer for students. Borrow a couple for reading. Then tackle the subject. If you post a question in a active Facebook group for uni students they can pitch in and help. Mainly by giving their own opinions. Also finally circle or highlight any key words to do with propaganda in blue for example.