Create an imaginative caricature of a man dressed as a leprechaun, standing in a vibrant, magical forest setting. The character should embody exaggerated features typical of caricature art, such as an oversized head, a wide, beaming smile, and large, expressive eyes. His outfit is a classic leprechaun costume, complete with a green tailcoat, a vest embroidered with Celtic designs, knee-high socks, and buckled shoes. On his head sits a tall, green hat adorned with a shamrock, and in one hand he playfully wields a shillelagh (a traditional Irish wooden walking stick). Around him, the forest brims with life: a rainbow arches in the background, pots of gold are playfully hidden, and mythical creatures like fairies and unicorns peek out from behind the trees. This setting should capture the whimsical and enchanting essence of leprechaun lore, filled with vibrant colors and a touch of magical realism.