Nice! This is great, only I wish it were bigger so I could see the details... are you trying to hide that it's blurry??? Hahaha just kidding. I like the color and texture of the image. It's small, so 7, otherwise it would be at least a 9.
You have probably received comments about size. I did this for my first submission as well. Pixesl cannot been more than 640 for the largest dimension of the submission and when you save the file as a jpg file change the quality to high--somewhere around 9 or 10--as long as it is not larger than 150K--good luck. Looks like a good shot--just hard to see.
Why so small? In Photoshop, you can change the Image size so that the longest side is 640 pixels, then use Save for Web and optimize it to a file size of 150k.