Once they are boned it's not something even I know how to fix. Basically, what it looks like from here is that a pattern was enlarged and it would likely fit the person it was designed for. In other words no apparent errors in what you actually did. With the exception of fitting. That's a lot of work, and nicely done, so I hope someone else has a solution. My solution involves starting over. I highly recommend using the techniques from this book : Stays and Corsets Volume 2: Historical Patterns Translated for the Modern Body https://smile.amazon.com/dp/1138061255/ref=cm_sw_r_cp_apan_i_HS5ABVYNN4Z3H1BWG3MY. After creating a basic pattern that fits you, slip your current pattern on top of that and correct the lines, staying as close to your original pattern as possible. Mark the bones the same way as your original pattern and make at least one sloper (aka mock up). In a sloper this gap would become apparent, at which point you dart it up until it fits then transfer those changes to your pattern.