The blue-green monster in the center of the coloring page seems to be in despair, with his hands raised and mouth agape. His three eyes are unique, two on his face and one on his forehead, giving him a slightly alien look. Two small horns adorn his head. The vibrant orange of the building behind him stands out in contrast to the cool hues of the grass and monster, all of which can be brought to life with some creative, colorful strokes. Consider adding extra details such as blush on the monster's cheeks and reflecting light from the building's windows. Pops of yellow and pink, to represent a sunset, could also bring the image to life. Make the monster's eyes stand out, and perhaps add stars in the night sky for extra atmosphere.