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The illustration isn't bad, though I think the current website works a little better. It looks more like a blog. This looks more like an environment preservation website. To me, this also looks slightly on the cheesy side of things.
Though I think the current design works better, I think you still have some refinement to do on it. Just my thoughts...

I think your possibly right. It seems to have taken a little corporate feel to it, and i have tried to take that away with the vectors.
Back to the drawing board i think.