national greeting card day whimsical nature scene with sketch of bird and wildflowers in pastel colors

wildflowers tranquility imaginative environment minimalist simplicity creativity harmonious whimsical botanical national greeting wildlife delicate adorable outdoors artistic drawings monoline sketches peaceful elegance detailed flowers drawing fantasy scenery outline contour refined vibrant nature sketch pastel colors floral plants gentle simple subtle serene garden meadow dreamy winged scene clean lines fauna flora card bird line cute soft airy day art