Since 1500x896 is a specific landscape resolution (common for some blog headers or desktop wallpapers), you can use design tools to "put together" a professional post:
Many forums have specific size limits for avatars (often around 150x150), so your 1500x896 image is better suited as a discussion post image or banner rather than a profile icon. New Facebook Avatar Post Option 1500x896 Avatar hГЎttГ©rkГ©p>
If you are posting to a specific "Avatar" (movie or show) fan community like r/Avatar on Reddit : Since 1500x896 is a specific landscape resolution (common