Hi. I run a magazine called Surreal Grotesque and for October we are doing a tribute to Lovecraft issue. I love your art and I was wondering if you would let us use some of your pictures for that issue. All credit would remain with you and I could run a small bio. You can see the magazine here: www.surrealgrotesque.com. We are legit and also have a book on Amazon called: Aliens, Sex and Sociopaths. Unfortunately I can’t pay for art right now, all I can offer is exposure, we do have over 1000 fans on Facebook. Thank you for your time. Let me know what you think or email me at Surrealgrotesque77@hotmail.com.
While I love it on an artistic and visual standpoint, this really doesn't have much to do with Dagon. Lovecraft clearly states in the story that the creatures the narrator found were "damnably human in general outline."
If you reread you'll notice the line refers to the humanoid worshipers of Dagon sculptured on the monolith (which you can see on the bottom of the structure by the waves) and not Dagon Himself .
This passage describes Dagon:
With only a slight churning to mark its rise to the surface, the thing slid into view above the dark waters. Vast, Polyphemus-like, and loathsome, it darted like a stupendous monster of nightmares to the monolith, about which it flung its gigantic scaly arms, the while it bowed its hideous head and gave vent to certain measured sounds.
And yes I took liberties with the terms arms and Polyphemus-like.