How to change the App Image and Title your on Facebook Page
Once you launch the Sweepstakes on your Facebook Page it will automatically create a tab and it will also appear in the left side panel on Facebook under apps. You can not only change the tab title but also the app image on Facebook.
Log into your Facebook Page and select “Settings” in the upper right corner, click “Apps” from the left side panel and select 'Edit Settings.
You’ll be able to change the image and title
2. To change the tab title please remove the word Sweepstakes and change it to whatever you wish. I would suggest something that catches the eye - simple and short: “Enter to Win”.
3. You can also change the image for your tab that will appear on your Facebook brand page by clicking “Change” next to “Custom Tab Image”.
NOTE: You can upload a JPG, GIF, or PNG file. Use an image that is 111 x 74 px, and is less than 1MB in size.