Your image size is too small - it is hard for me to judge it because it is hard to see the details or identify exactly what your photo is. A good guide is to have the long dimension 640 pixels.
Looks like it may have good shallow DOF, but hard to tell with the photo being so small. You should try to make the challenge entries as close to the largest allowable size. "File Size: No larger than 150 KB (153,600 bytes).
Dimension: No dimension may be shorter than 160 pixels or longer than 640 pixels. " Small photos tend to get low scores, try again with a photo closer to the above dimension and you will do much better.
please, please see the tutorials about sizing images for submission! this can be a great site and a lot of fun, but it can be bumpy at times. good luck in the future.
2 - Difficult to tell about the potential, but seems to be there. Criticism; needs to be bigger, preferably 640, in this case width. Perhaps a different crop/angle too may have also helped.