Once you have a completed character rig, the next step is to attach the actual model of your character to the rig. Apply the Skin modifier to your model, and add the bones in your rig to the modifier. Then your task is to adjust how much weight, or control, each bone has over specific vertices on your character model like the image below.
Skin your characters, and adjust any and all weights so that the model moves with the bones in your rig smoothly and without any unsightly bulges, pinches, or deformations that just don't look natural.
For this project you are expected to complete all of these tasks described above. You will have an additional week to perfect, polish, tweak, and finalize the project however your full first pass is due this week.
I highly recommend you start immediately as this can take some time and effort the first time through.
Save the pieces of your assignment as an archived .zip file, and upload all the components together. The name of the file should be your first initial and last name, followed by an underscore and the name of the assignment, and an underscore and the date. An example is shown below: