Hi @JulieHather ...
Thank you for confirming that you are a student. Have you tried reaching out to your instructor to see if he/she allows for re-submissions for your assignment? Normally, you would make the changes to your document "offline", and then you could re-upload the assignment if your instructor allows it. But, I think it would be best for you to contact your instructor directly since Community members don't have access to your course content or North Idaho College's Canvas environment. You can contact your instructor right in Canvas by following the information in this Guide:
How do I get help with Canvas as a student?
I hope this will help a bit. Good luck!