"Seem-less Eternity"-6 page horror/supernatural script

Here's a six page horror script, "SEEM-LESS ETERNITY". It's written in movie format -- not play. I'm very excited to share it with this wonderful community! I have attached it to this post in .pdf format. Thanks so much for your time and interest! Any and all feedback is invaluable, and I appreciate it beyond belief.

Critiquing script is far beyond my scope of experience, but I liked reading it, except for one part.

Silhouette of a gargoyle comes to life. It resurrects.

The 'it resurrects' part is unnecessary because it just reiterates the first sentence. Overall, it seemed kind of Twilight Zone-y. I'm just wondering about marketability, not that you have to sell it, it's probably purely be an exercise, but what sort of use can you get out of this script of this length?