Certainly! Here's a description of the scene you've described in the language of watercolor painting:

In the gentle embrace of twilight, a watercolor canvas unfolds, capturing the ethereal beauty of a serene sunset landscape. The canvas, 1920 pixels wide and 1280 pixels high, serves as the perfect stage for this natural masterpiece.

As the sun bids its fiery farewell, its crimson glow dances atop the distant mountains, casting a warm, radiant spell over the landscape. The sky, a symphony of oranges and purples, blends seamlessly with the deep blue river that winds gracefully through the meadow.

Beneath the heavens, a meadow of velvety grass stretches out, its surface adorned with small, delicate white flowers that sway in the gentle breeze. These blossoms, like stars scattered on Earth, lend a touch of celestial charm to the terrestrial realm.

Amidst this idyllic tableau stands a solitary, tall tree. Its branches reach high into the sky, their leaves painted in vibrant greens and gentle blues. The tree, a silent sentinel in this picturesque scene, adds an element of majesty to the tranquil meadow.

This watercolor masterpiece captures the fleeting beauty of a sunset, where nature's colors harmonize in a breathtaking display of artistry. It invites you to immerse yourself in the tranquility of this moment, where the world is painted in the soft strokes of watercolors and the sun kisses the mountains goodnight.