YOU SAID:
Christmas is coming and I'm excited
INTO JAPANESE
クリスマスが来ていると私は興奮して
BACK INTO ENGLISH
Christmas is coming and I was excited
INTO JAPANESE
クリスマスが来て、私は興奮した
BACK INTO ENGLISH
Christmas came and I got excited
INTO JAPANESE
クリスマスが来て興奮した
BACK INTO ENGLISH
Christmas came and got excited
INTO JAPANESE
クリスマスが来て興奮した
BACK INTO ENGLISH
Christmas came and got excited
That didn't even make that much sense in English.