This week, I made another set of basic bodice and trouser slopers for the second look, this time for my photography model. The first fitting was on Tuesday, just two days ago. From this fitting, I learned that the trousers would have to come in at the hips and waist, and that the bust point would need to move down and over, toward the center front. Moving the bust point down and over was an experiment in dart manipulation on the flat pattern. I tried a few different things.
The correct bust point was marked directly on the mockup, so the first step was to copy the bust point onto the paper pattern. I was able to see my markings through the paper, so I laid the paper on top of the mockup and marked the location of the correct bust point onto the paper.
The first thing I tried was drawing in the left dart leg from the new bust point to the waist seam, and cutting the line up to the new bust point. Then I cut from the old bust point to the new, making sure the paper was still attached at the new bust point, and pivoting to open the new dart. This didn't really work however, because it was difficult to determine the new waist seam shape.
I taped it shut and tried again.
The second time, I tried moving the dart first to the center front and then opening the new dart location using the original bust point as a pivot point. For some reason, that method was confusing me, and I thought I was raising the new bust point.

I taped my pattern closed again, and drew a straight line from the new bust point, through the original bust point, all the way to the armhole. I cut the line and the right dart leg to the original bust point, and used it as a pivot to open a new armhole dart. Then I cut from the original bust point to the new one, marked and cut a new (angled) dart leg from the waist seam to the new bust point, and pivoted the armhole dart closed resulting in the open shape below. Looking back, this is the same open shape that would have occurred with the second trial, but it made a lot more sense to my brain this way.
I filled the empty space with paper taped behind, trued the new dart legs to make sure they were of equal length, and reshaped the waist seam. Above I have folded the dart closed before cutting the pattern out so the seam allowance at the waist will have the correct shape.
I also needed to lengthen the bodice front and back (above). The back was a lot easier, as I didn't have to move the dart first.
At the first fitting I drew directly on the prototype while it was on my model to get the neckline shape I wanted. I then laid the prototype pieces over the pattern pieces and used a tracing wheel to trace the changes onto the original pattern piece.
I used the same method to make the pattern pieces for the overall bib and straps. Luckily I had thought to trace the first draft of the front bodice pattern before altering the neckline and shoulder seam. I needed those original lines to place the prototype piece correctly for tracing.
Above are photos of the front bib and strap pattern pieces. I decided to copy the new dart onto the front bib for a better fit around the bust.
Turns out I overcorrected the back armhole, so I will have to come back out an inch. I drew on the prototype again for another round of pattern corrections. The back of the pants still have pull lines, so I will need to adjust the crotch curve on the back, and possibly the front as well. And I took in a little too much at the hips and waist, so I will let the side seams out a bit and use a larger seam allowance for any final adjustments. I also have yet to pattern the sleeve. On to pattern refinements!