That shield has a flashing animation, which is illegal hence why, it gets disapproved. Also your shield is saved as .gif which means that it represents a gif. Shields should be .png as far as I am aware. If you remove the gif and save the file as .png, your shield might get approved. In addition, that gif is too big and goes out of the expected frames range which is probably why the frames are a problem as well. Like I said, if you remove the gif and save the file as .png, and the shield matches every criteria and requirement mentioned on the first post of this thread, it should get approved.
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Este Head tiene un gif illegal y el archivo de la cabeza esta guardada como un .gif. Deberia estar guardada como .png.
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The body should get disapproved. There are watermarks instead of frames, so the head should be disapproved as it has missing frames.