The image features a vibrant and cheerful cartoon of a green dinosaur. The dinosaur is smiling broadly, revealing its sharp teeth, and has its arms raised in a friendly wave. The background is plain white, which makes the dinosaur stand out. At the bottom of the image, there is a banner with the text "Happy Birthday" in bold, colorful letters. The letters are in shades of yellow and blue, adding a festive touch to the overall design. The text is clear and easily readable, making it a central focus of the image. The overall style of the image is cartoonish and playful, with a clear emphasis on celebrating a birthday. The use of a dinosaur as the central figure adds a whimsical and fun element to the design.