This is both funny and cute! The joke works perfectly and I have chuckled about it several times. Although I often misremember it as "Nerconominomnomnom". And with that body-to-head ratio and the little Cthulu napkin and the baby fat like roundings, the book looks too cute to seem really dangerous. That doesn't mean that you didn't make it appropriately eerie. The glow, the circled pentagram and the texture do that.
The texture is my one and only problem with this image. I would have thought it was a background, but it isn't, it's in the foreground. Which would mean that the book isn't actually textured. Meanwhile, some of the other parts of the book (and especially the parts where it glows) look like the JPEG compression was too strong.
But other than that, it is cleanly executed and well designed.