That is NOT a good sideblade art for Pirates because the game doesn't reference those images in the game. I think something more like the high seas with pirate boats in the distance on one side and maybe tartoga a pirate village on the other. The Kraken is missing from the game personally I think a cool mod would be to make tentacles coming from the maelstrom would have been cool.
I would not buy those sideblades because it doesn't really represent what is going on in the game. Where do you see violent rain, violent oceans, I would go more Pirate based for the art. I think what you have there is a total swing and miss. A pirate ship close up firing cannons would be nice, and expansive ocean, treasure, a pirate cove, not violent oceans.
Also NOT a fan of your Munsters art either... its boring. I'd rather see like Grandpa's lab, better image of Spot, anything but a boring mansion with pictures of the character hanging on the wall. I think you need to go back to the drawing board there. I love a lot of your art you do and have bought a ton but I think those are two misses. The Munsters art looks just like some really plain art I saw for Adams Family. Hope you can do better.