サンプルのプロンプトだけでいい絵が出来たと思います。

autumn, harvest, vegetable, fruits, wheat, maple

(worst quality:1.4), (low quality:1.4), (monochrome:1.3), (bad anatomy, bad hands:1.4), (watermark, username:1.2), lowres, text, error, missing fingers, extra digit, fewer digits, cropped, normal quality, jpeg artifacts, nsfw