tafscottwin, steam locomotive, animate inanimate, male focus, vehicle focus, duo, twins, grey faces, looking at viewer, grin, outdoors, steam, motion blur, autumn, falling leaves, day, general, very awa, masterpiece, best quality, absurdres, perfect quality, detailed background, intricate details, dramatic lighting, depth of field

lowres, worst quality, signature, username, logo, watermark, artist name, weibo watermark, patreon username, cropped face, snowplow, another locomotive, passenger coach, goods wagon, human, car, tires, conjoined, the twins are on the same railway track, (nostrils), pink faces, explicit, questionable