You can pin a contact, but not a specific phone #. If the contact has a photo, that photo will appear on the tile. Clicking the tile will open the contact from which you need to hit the phone #, email address, etc.
You can add a contact photo. When in the contact, hit edit button, then hit the contact photo. If there are multiple linked contacts for a single person, e.g. Gmail, Hotmail, Facebook, LinkedIn, etc., you can select from among those photos already associated with each account. You can also choose a photo to be associated with some of them, e.g. Hotmail, but not Facebook.