delicate watercolor border with bluebirds, cherry blossoms, and pastel eggs. concept of spring, nature beauty, gentle

easter eggs border frame watercolor bluebirds cherry blossoms spring nature beauty decoration delicate pastel celebration gentle birds floral branches seasonal illustration flowers rebirth tranquility harmony renewal natural vibrant serene colorful decorative botanical springtime creative cheerful concept greeting card space vertical festive mockup watercolour aquarelle art painting ai generated