This beautiful blue dragon has a cheerful expression with a wide open mouth, displaying its sharp teeth and a long tongue. The dragon's bright green eyes look inviting and happy, and its spiked tail gives it a unique touch. To give it an extra air of fantasy and make it more colourful, you could colour its wings purple, the spikes on its back yellow, and use a mixture of blues on its body. To make the dragon stand out even more, try highlighting some of its features and details with a bright white. You could also outline the dragon in gold for a dramatic effect. Have fun and get creative with this colorful dragon!