现代孔版印刷风复古插画海报

以附带的照片为参考，创作一张现代孔版印刷（risograph）风格的扁平海报。将照片中的颜色用作暖奶油色纸张背景上的实心、扁平色块。包含简单的手绘黑色轮廓、天真的比例、极简的面部特征、精细的阴影纹理、可见的斑点颗粒，以及略显不完美的印刷效果，以营造真实的孔版印刷质感。保持形状整洁且具图形感，带有俏皮的民俗海报美学和沉稳、居中的构图。用受日本复古插画书籍海报启发的圆形奶油色边框为作品框景。宽高比：4:5。

Create a flat poster in the style of a modern risograph using the attached photo as the reference. Use the colors from the photo as solid, flat color blocks on a warm cream paper background. Include simple hand-drawn black outlines, naïve proportions, minimal facial features, fine hatching textures, visible speckled grain, and slightly imperfect printing for an authentic risograph feel. Keep the shapes clean and graphic, with a playful folk-poster aesthetic and a calm, centered composition. Frame the artwork with a rounded cream border inspired by vintage Japanese illustrated book posters. Aspect ratio: 4:5.