Giant Postage Stamp Covering a Vibrant Meadow

"A tiny postage stamp grown to massive size, its rainbow-hued surface depicting a glowing floral scene, covering a vibrant meadow with tiny glowing butterflies, set against a bright, pastel sky with wisps of fog drifting, lit by a vibrant, multicolored stamp glow, fantasy art, ultra-detailed, vibrant rainbow colors, whimsical atmosphere, style: painterly fantasy"