YOU SAID:
the trophy would not fit in the brown suitcase because it was too big.
INTO JAPANESE
トロフィーは大きすぎたため、茶色のスーツケースには収まりませんでした。
BACK INTO ENGLISH
The trophy was too big to fit in my brown suitcase.
INTO JAPANESE
トロフィーが大きすぎて私の茶色のスーツケースに収まりませんでした。
BACK INTO ENGLISH
The trophy was too big to fit in my brown suitcase.
That didn't even make that much sense in English.