Create a vertical oil painting-style image depicting a dark and gloomy rainy day at a water lily-filled canal in Bangladesh. Emphasize the moody atmosphere with overcast skies and subdued lighting. Portray the water lilies with rich, painterly details, and allow them to contrast against the dark, reflective water surface. Incorporate the lush, green landscape in the background, veiled by the rainy mist. Ensure that the image has an oil painting texture and evokes a sense of quiet melancholy. The image should be suitable for vertical display.