Must be your personal work and you must own the copyright upon everything within it
Traced illustrations should have the original image uploaded in the Property Release area (if it is not the case you should mention the illustration is your own work, created from scratch, in the notify admins area)
Don’t upload offensive content such as explicit nudes, drugs, people in offensive positions, racism
Add a relevant description to your file to increase its relevancy in searches. Don’t use all caps for the name and description.
Check the image for all the faults listed in 指南如下：
Must have a Model Release for all recognizable people in your image or video (files must be JPEG or PDF, filenames must contain only letters and numbers, no special characters)
Clear copyright: such as labels, logos, characters from cartoons or movies, buildings protected by a trademark (such as new sculptures), cars like Ferrari and Porsche, Harley Davidson motorcycles, the Coca-Cola bottle, the Olympic logo circles etc.