For the cover , we need to think of a design that is attractive to ren and that reflects the essence of the story. Here are some suggested elements : Lucas: Shown as a of about 10- , with a simple outfit but with some distinctive detail that identifies him as "The green guardian " ( for example , a green cape or a magic bracelet ). The environment: A mix of nature and city . Maybe a tree growing in the middle of a neglected urban area , symbolizing the impact of Lucas . bright colors : shades of green, blue and yellow to reflect life , nature and hope . action: Lucas using his powers , with plants sprouting around him or animals next to him , showing his connection to the environment .

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