I am making a halter dress with a summer jacket. I would like both dress and jacket to have the same neckline? Any suggestion on how to going about doing this.

Anna use the tools in your program,if you have MPD its in advanced tools.What i do is measure down, the high bust area, then go from there,I like my depth to be aprox 7",which is just a tad above the high bust.But you can make it how deep you wish.