This vibrant green snake is powerfully coiled around the trunk of a tree, creating a convincing sense of power and dominance. Its scales are a deep, rich shade of emerald, contrasting against its sharp, red eyes. Its tongue darts in and out, ready to strike at any moment. To make it more menacing, I would suggest shading the scales along the contours of the body, and darkening the area around the eyes. To finish it off, the tongue could be a bright orange or yellow, and the tree could be painted in a light brown to make it stand out against the snake. This would make a vibrant, vivid picture, full of tension and energy.