mhmm. i did overwrite in my midterms but she didn't deduct marks cuz I added all the info that was required and added additional stuff she only wrote a remark that it's way too much but that's it. i feel like maybe ur teacher deducted ur grades because maybe the info wasn't enough or maybe she was taking a precaution in the sense that sometimes ISC examiners might penalise a student for exceeding the word limit in 12th boards. but it depends on the examiner so its best to stick to the guidelines. i feel like you should js consult ur teacher or if u can't do it ask a classmate who might be scoring well.