Illustrate a whimsical scene of a birthday party in a magical forest, with a giant birthday cake in the center, surrounded by fairies, unicorns, and other mythical creatures, and a trail of sparkles and glitter leading to a hidden treasure chest.

Design a digital painting of a birthday celebration in a backyard, featuring a big banner with the words 'Happy Birthday' in bold letters, a table filled with delicious food and drinks, and a group of friends and family laughing and having fun together.

Create an illustration of a colorful birthday cake with candles lit, surrounded by balloons and confetti, with a big smile on the cake's surface, and a party hat on the table next to it, in a warm and inviting atmosphere.