The following video has more details on how you can customize the profile page of your Google Plus account.
How to customize the profile page of your Google Plus
The new Google+ cover photo is similar to the Facebook Timeline version but it is a little bigger and the profile picture is on the right.
How to Add a Cover Photo to your Profile
1. Cover photo — a large panoramic style photo that goes behind and extends past your profile picture on the right side. This new format ties the images together nicely, making a lot of impact. It can also create a beautiful branded image for you and/or your company. The size is 940 pixels X 180 pixels and the recommended format is either jpg or png.
2. Profile picture — larger than before with a minimum upload of 250 pixels X 250 pixels and a recommended format of jpg or png.
3. Scrapbook photos — these can either be five individual photos or one large photo cropped into individual squares that are 110 pixels X 110 pixels. The recommended format is jpg, png, or gif.