When I first began assisting in the classroom, I felt as though most of my students saw me as their friend or older sibling rather than an authority figure. Although this was good in that it allowed them to open up to me and feel comfortable in the classroom, I worry how this'll impact my ability to hold authority as a teacher. Even some of my coworkers mistook me for a student at first, regardless of my professional attire. What can I do to come off as more mature and firm?