Hi Gaurav,
No need of getting worried, by failing for the first time you might have learned a lot like where all you hava made the mistakes, Which area you are weak etc. Consider that when you preapare ahead. And do a lot and lot and lot and lot and lot of mock exams. There are a lot of free and commercial ones listed in this site itself.
When you are consistantly sccceding in different mock exams(at least last three) you are ready for the exam.
Good luck Gaurav
, you can do it..