To submit your paper assignment, first navigate to the assignment details page, from there you can download the assignment template provided by your instructor.

This document contains the questions and instructions for completing the assignment.
You'll need to print this document and fill out your answers by hand. Make sure to follow the formatting guidelines specified by your instructor. Once you have completed the assignment, take a clear scan of your answers and save it as a PDF file.
Once you have the PDF file ready, you can submit it by clicking on the area under the "Submit your assignment" headline or by dragging your file there.

Once the file is uploaded you will be given the option to modify where your answers are located.
If needed select the corner of each answer and drag it to adjust its size or position. Make sure the answers are fully covered inside the answer region.
After ensuring the answers are correctly located, click the "Submit fields" button to save your changes and confirm the submission.

You should see the 3 steps (Upload, Assign, Submit) marked with a check mark as completed.
