vintage storybook illustration(复古故事书插画), whimsical cute style(奇趣可爱风格), soft watercolor textures(柔和的水彩纹理), gentle outlines(柔和的轮廓线), limited color palette(有限的色彩范围), ample negative space(大量留白), charming and heartfelt(迷人而真挚), trending on artstation(艺术趋势), award-winning illustration(获奖插画级别)