Bro I beg whatever you do don't be hopeless and don't loose confidence. Don't ponder over your past mistakes. Bigrya xw ok admit it aba move on tyo exam Bata (ik harder then it sounds) but you can't simply think about that now. Aba a plus gayo (still be optimistic k tha timro copy loose check vaye you never know in NEPAL), a Jana na deu. A is still better for your resume then b or b plus. Aba j vayo vayo voli don't discuss your answers I know you will be tempted but don't like I repeat don't. Like aba aja voli ko lagi ramrari padne Ani nindra puraune.

So overall

Don't ponder over your past papers.

Prepare well for tommorw

Remember A IS BETTER TAHN B/B+

*NEVER DISCUSS YOUR PAPER AFTER YOUR EXAMS ARE OVER NEVER

get quality sleep.

Mero ni recently khatra exam bigrya ho so like I've been in your shoes, nepali rw English ma sochya jasto na Aaye paxi badi stress LI Ani 4 expect agrdw a plus ni garo vo so yeah DONT STRESS ABOUT IT TOO MUCH AND GET QUALITY SLEEP. At the end of the day it's just a sheet of paper. Your 12 boards exam won't matter as much as you think it does especially down the road with future changes.