Create a black-and-white outline illustration in a perfect square 1:1 ratio of a glass vase with wildflowers. Use bold, smooth, and even black outlines with clean white interiors. No colors, no shading, no grayscale, no solid black areas. Keep the object(s) centered, large, and easy to color, with simple shapes and minimal details. Show only 1–3 main objects with no background or extra decorations. Make sure the style matches a children’s coloring book — clear, friendly, and minimal.