Lay the sloper on top of the commercial pattern aligning the straight of grain lines (keeping grainlines on both patterns parallel). In these patterns the fold line is the straight of grain. Find the best fitting size; in this example its VS in the upper body above the bust grading out under the arm and continuing out all the way to the hem. Once everything is aligned and level trace around the sloper.
When deciding which cutting lines to follow, the sloper or the pattern, take these two things into consideration.
- How will the change impact the fit?
- How does the change imapcts other pattern pieces?