Create a watercolor clipart picture of a cute panda sitting next to a birthday cake, with small flowers and greenery. The panda should have a friendly and adorable expression, with its black and white fur depicted in soft watercolor textures. The cake should be a single-tier design with pastel colors and simple decorations, such as sprinkles and candles. Scatter small flowers and greenery around the cake and the panda to create a whimsical and natural atmosphere. To add to the celebratory feel,