An interesting piece to say the least...
I'd have to agree with the reviewer below that the reverb on the electric is a bit too much. The acoustic implies a certain intimacy with its tone and micing choice, but the electric contradicts that and creates this kind of dual-soundscape that confuses the listener.
I gotta give you kudos for live performance, but there's some tuning issues here and there that bug me a bit, but nothing major luckily. I would have liked more instruments (maybe some drums or even keys), but it's fine with just the guitars.
As far as compositionally, the modulation at 0:57 is really odd... down a half-step if I'm not mistaken? It's just a weird direction to take the piece and for not much either. The chords are nice, but rather simple. I would have liked it if you switched things up a bit more, maybe tried going to the 4-chord (D maj) instead of E maj every once in a while or maybe the substitute dominant (Bb7) instead of E7.
Regarding the art, I don't really see much resemblance. I could maybe see this on the weather channel, but it just doesn't should Cthulhu to me... Defo pretty original though.
Total: 52/100 (NG: 2.5 stars)