As per Alison Cumming comment I wanted to clarify my issue. The difference in FI's tutorial and my own is mostly a two part placket vs a one part placket. Although in mine the underlap is 1/4" smaller than the overlap. I'm not sure what it is on hers. I imagine I would have the same problem however I could just be thinking about it wrong. Here's what is going on with mine.
Here is what it should look like in paper.
This is what it is doing.