I've sent by PM.
Since the contest thread has been locked, so I guess it's fine for me to use alternative hosting image.
But you can use my image to improve your site, maybe someone might face a same problem like me in the future.

I already try to use your image compress, but the result is same.
Thank you for the file. I will analyze it carefully.
But, tell me one thing: did you use any specific program to compress the image?