Did you post the image with 899x593 pixels or did you post a large image and the software resized it to 899 pixels by 593 pixels.

The image appears a bit soft, so wondering if you posted the image without resizing. The images need to be resized to max 1024 pixels on the longest side and the overall file size should be less than 300 kb. Else the software resizes the images and it appears soft.