The Facebook Newsfeed allows a larger image and expanded text. Please be sure you'v also granted us access to your Facebook company page (click here for details: https://digitalthrottle.zendesk.com/entries/28147378-Grant-Access-to-an-Advertiser-s-Facebook-Page).
The following ad details the max characters and sizes allowed:
Please note Facebook limits the amount of text in your image to 20%. Good idea to use this tool to verify if your image will pass the mandatory creative audit:
Grid Tool: https://www.facebook.com/ads/tools/text_overlay