watercolor s of vehicles, plants, and flowers with a retro feel

watercolor illustrations vehicles plants flowers retro feel light brown green john wilhelm quirky character designs ecoarchitecture lois van baarle harmony nature natureinspired vintage style ecofriendly floral elements retroinspired artwork botanical creative vehicle naturethemed techniques ecoconscious vibrant colors organic natureloving artistic compositions color palette unique sustainable patterns nostalgic cars potted center stage created playful cartoon features harmonious blend beige tones minimalist sets flower motifs add touch groovy composition strikes balance realistic stylized making captivating piece