Capture a whimsical portrait of a troll standing cheerfully amidst a lush, rolling meadow on a sunny day. The scene is viewed through a fisheye lens, enhancing the distorted, playful perspective, with the landscape's bright and vivid colors accentuating the troll's mischievous grin and oversized features. The vibrant green of the grassy hills stretches to the horizon under a clear blue sky, creating a cheerful and enchanting atmosphere.