A concert musician does not play for the first time with a paying audience. Neither should you.

First off you need to prove the process. Second you need to get the timing down so the negs print properly on your enlarger/paper. All that is required is a practice roll of a doll or your wife/girlfriend. 6 exposures on 35 mm is all that is needed. 12" of film.

What you are doing is taking a new camera and film on vacation, getting screwed up negs and then asking how to fix.