watercolor painting of a majestic waterfall surrounded by lush forest scenery. concept of nature's beauty

waterfall watercolor forest nature beauty landscape tranquility serene vibrant art trees greenery peaceful colorful scenery lush foliage painting stream calm outdoors relaxation environment canvas brushwork cascade mist sunlight reflection harmony wilderness freshness picturesque inspiration flow natural artistic visual aesthetic eco organic riverside backdrop majestic concept colors illustration watercolour aquarelle ai generated