Create a serene and uplifting image where the clouds in the sky form the shape o

Create a serene and uplifting image where the clouds in the sky form the shape of a radiant smile. The sky should be a soft gradient of blue, transitioning to warm tones as the sun sets, with the cloud formation gently curving to resemble a bright, joyful smile. The smile in the clouds should be subtle yet unmistakable, symbolizing happiness and positivity. The surrounding sky can feature a few birds flying peacefully, adding to the tranquil atmosphere. The overall composition should evoke a sense of calm and contentment, capturing the natural beauty of the sky while infusing it with the warmth and joy of a smiling expression.