>>4396523hmm/// I actually like the first version better since it's more visually interesting, color-wise. To do a proper bodysuit you're probably going to make it three times.
1. the first will be straight from the pattern you got, make it out of stretchy material, but use something cheap. then have a friend pin/mark anywhere where it pulls weirdly or is too baggy. resew this until it fits right, then seam rip along the new seams to make the pattern for the 2nd version.
2. use the cheap fabric again to make a new one from your pattern. this will make sure that the pattern didn't get cut wrong/messed up in the seam ripping/recutting process. NOTE: you can skip this part if the first changes are minor or if you're confident.
3. make out of actuall costume material. It takes longer but the finished result is WAY nicer ^_^