Epic Battle in the Verdant Valley

Prompt:  Majestic medieval castle on a hill, overlooking a vast landscape, towering turrets, stone walls, lush greenery, distant mountains, dramatic sky with hints of sunset, two armored knights engaged in a fierce duel, dynamic poses, detailed armor and weapons, traditional gouache painting technique, rich colors of deep blues, vibrant reds, and shining metallics, intricate patterns, realistic textures, high level of detail, strong contrast between light and shadow, historical accuracy in architecture and attire.