Look for: I want to view
Click My Complete Profile
Next, click: Contact Information
On the first line, where it has your name, click on the pencil on the right hand side. Your personal profile will come up.
Again, across the top line, you will see a button on the far right labelled Personal Photo. Click this.
Follow the instructions for choosing a photo and then uploading it. Save your choice when you are happy with it.
Note that this constitutes a Change Request, and it will have to be approved before the picture is live. This normally happens within a day.