YOU SAID:

I sprinkled mud onto potatoes that had already been washed so they would look freshly dug when they hit the supermarket

INTO JAPANESE

私はすでに洗っていたジャガイモに泥を振りかけ、スーパーマーケットにぶつかったときに掘りたく見えるようにしました

BACK INTO ENGLISH

I sprinkled mud on the potatoes I had already washed and made it look like I wanted to dig when I hit the supermarket

INTO JAPANESE

私はすでに洗っていたジャガイモに泥を振りかけ、スーパーマーケットにぶつかったときに掘りたかったように見せた

BACK INTO ENGLISH

I sprinkled mud on the potatoes I had already washed and made it look like I wanted to dig when I hit the supermarket