To upload a profile picture:

1. Click on your name in the left menu.
2. Hover over the profile picture and click the pencil icon that occurs

A screen similar to the one above will pop up on the right. Click on Upload new profile picture to continue. You will be prompted to upload an image file from your computer.

You will see a progress bar as the file uploads. Once the file has been uploaded, your picture will appear in the circle above.