1. because you did not upload a preview.

2. because the preview you attached is the wrong size

3. because the preview you attached has n***** (censored previews are allowed)

*if upload guide is not followed to a tee. it will not be allowed
P900 themes
user posted image

N6600 themes
user posted image

T6xx/Z600/K700/Z1010/S700
user posted image