does anyone know how to upload pictures on here for a question like im on a mac and when i try to attach a picture it says like invalid file or whatever like ajdsjsdk pls help if u can

Plz , does this sound like an ok introduction to send to my professor? should i make any changes? my name is ali, and i am in your com-111-015 course on monday and wednesday at 1 pm. i am a freshman elementary education major. i have some experience in public speaking, as i have taught in an elementary school classroom and have done a few speeches in high school. on i scale of 1-10 i rate my public speaking competency at a 6, i am not extremely confident speaking around others and i sometimes get nervous. throughout high school i was involved in girl scouts and worked as a nanny and babysitter. i am also a member at catholic campus ministry. overall i hope that this course will make me a more confident public speaker. my dream job is to become a teacher in a 3rd through 5th grade classroom teaching math and science.