1girl, long black hair, smiling, yeah anything you put here should be good, let's add an artist to change the look, like (tsutomu nihei:1.3)

(blurry:1.3), holding, grabbing, (low quality, worst quality:1.4), (bad anatomy), (inaccurate limb:1.2), bad composition, inaccurate eyes, extra digit, fewer digits, (extra arms:1.2), wing, (tail, tails:1.2), watermark, signature