“Let it snow”是一幅绘画风格的竖版冬季壁纸，短句小字置于底部。绿色极光在繁星夜空中蜿蜒，下方是雪山、深色湖面，以及窗户亮灯、烟囱冒烟的木屋，周围是积雪的松树。你可以把文字换成自己的问候语、名字或日期，制作专属的冬季壁纸或卡片。

Create a finished vertical 9:16 iPhone lock-screen wallpaper, an original, serene Christmas winter-night illustration. Keep the upper 25% a calm, nearly detail-free field of deep midnight blue-black so the lock-screen clock remains legible; no clock, phone frame, widgets, icons, or extra words. Below, soft emerald-green northern lights sweep across the night sky in a few broad, translucent ribbons, gently feathered at the edges with restrained glow. A few tiny stars and sparse falling snow, never busy. In the lower third, make one small, charming log cabin the clear subject: dark honey-brown horizontal logs, a steep snow-capped roof, one warm amber window, and a narrow chimney releasing a delicate curl of smoke that drifts into the still air. Surround it with quiet blue-white snowdrifts and a few simple pine silhouettes at the far edges; keep the cabin distinct against the snow. At the very bottom, safely inside the screen edge, set the exact words “Let it snow” as the only text: small but clearly readable, centered, in an elegant, lightly tracked ivory serif. Use clean letterforms and spell the phrase exactly. The illustration should feel hand-painted in layered matte gouache, with subtle paper grain, soft pigment edges, deep cool shadows, and the aurora as the sole luminous green accent. Restrained palette of midnight navy, emerald, snow ivory, muted pine, and warm cabin amber. Quiet, spacious, polished, and atmospheric; preserve a generous dark open area above the scene.