What a fun story, to image the story-lovechild between Charles Schulz and H.P. Lovecraft! Lots of fun images, and little in-jokes for anyone who's read any Peanuts cartoons (though if you haven't, all of that would go over the head.
I like the story better if I disregard the final section with Lucy though. Even though it surprised me, and I got a laugh out of it, it made the rest of the story into too much of a joke. Before that the story had been very self-consistent, and only funny if you were familiar with the Peanuts cartoons, the references to the WWI Flying Ace and the security blanket, and so on. It made sense whether you considered it an homage or a standalone story: you could enjoy it even if you weren't familiar with Peanuts. But the ending wasn't really consistent with the rest. Among other things, it seems that these characters are adults now--why would Lucy still be charging only 5 cents? It longer makes sense as a standalone story with that in mind, and reduces the rest to nothing more than a silly joke, when before it had existed both as a silly joke and a standalone fun story.