The background is just too busy.
Also, he sent me a new version of the Sigil based on a suggestion by our very own KingOvRats: the outer ring is now empty, the word Nyarlathotep being white/black. This kind of makes more sense as a) these symbols are meant to be drawn and b) it kind of cleans things up in a graphic design sense.
It looks similar to some other occult symbols, such as the Seal of Astaroth in Satanism.
There will be updates tomorrow with new KingOvRats designs...for an added scene...what shall be what the film is remembered for...THE TEMPLE OF THE CRAWLING CHAOS!