First, make sure that the Facebook account you use to login with has admin privileges for the page that you want to add the PicBadge to.
Add a PicBadge to your picture as demonstrated here.
After clicking the ’Next’ button select the ’Facebook Page’ dropdown menu. You will be asked to grant PicBadges the Facebook permissions needed to pull in your page data (We will never post on your page behalf without your approval).
Next select the desired page from the list, make sure that ’Set as profile picture’ is checked and click ’Publish’.
In the next screen you can invite friends to add the PicBadge too.
Please wait until the upload process is finished
In the next screen, click ’Continue to Facebook’. You’ll be directed to your Facebook account. There, click and drag the gray boxes in the corners of the lighter square to adjust the cropping area in the picture and, when done, click the ’Finished cropping’ link beneath the picture.
Facebook page admins can also add a special PicBadges tab to their page. Read more about it here.