For exams, if you can download the exam, print it, write your solutions in the exam, and upload the exam with your solutions, that would be optimal. Otherwise, write your solutions on a separate piece of paper in the same order and using the same space as the exam. For instance, if the exam has questions 4 and 5 in the same page, write the solutions of those questions in the same page. 1. Upload a single PDF-file only. Do not use other kind of files because you will not be able to upload them. Again, make sure you upload only one file. I prefer you scan your exam instead of just taking pictures because pictures look darker, and it is harder to grade from a picture.