Well this is kinda stating the obvious but your palette is predominantly cool blue while the target palette is predominantly warm desaturated yellows. I desaturated your image first then just applied a colorize to the whole thing to match the target. I added a bit more saturated colour in color mode onto the octopus head for the warmer accent that seems to be in those other images. I don't think it's a good place for the accent but just wanted to put it somewhere.
As for your painting, the perspective is all over the place. Look at the converging lines I drew on the second image. No consistent vp or horizon line. Suggest you read up on perspective and how to set it up and redraw the environment.
Hope that helps.
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Thanks a lot! Yeah you´re so right about the vanishing point :S, and perfect, thats a great color atmosphere, I'm going to desaturate it and colorize all again.
Thank you!
D.
I have decided to oversaturate it, like a low res animation cel or something like that :)
Its very different from what you were going for but the colours are nice enough. It's a shame the perspective is still just as wrong. No palette will fix that unfortunately.