Flatling w/peplum and bound edges

[Wickedvox]

I've decided to attempt flatling my my McCall's 4107 bodice pattern. As I sat here pining the peplum to the outer portion--BEFORE flatling--I realized this will not work with an unfinished bottom edge. Should I A) flatline THEN bind bottom edge THEN add the peplum, or B) hem the bottom and attach the peplum THEN flatline? Appreciate any suggestions! 

[gem]

Flatlining is the process of adding an additional layer to your fabric and then treating those two fabrics *as one.* So you do each piece individually, before constructing anything.

I didn't bind my McCall 4107 bodice (it doesn't call for it...?), but the Simplicity corset is bound and has tabs, and I do remember finding the process of binding that seam (where the edge of the bodice meets the tabs) *very* confusing. I would find some way to avoid that.

[Wickedvox]

Noted! No, it doesn't call for it, but it's such a pain to turn with the boning in it. Plus, the fabric I'm using is VERY unforgiving and I thought if I used a "flatlining" technique to put the right and wrong sides together it would be easier to manipulate the fabric to my whims! Oh! I just thought of this! What if I sewed the 2 piece,s right sides together, at the bottom with the peplum inside, then just flip them out and bind the rest of the edges?! I think I shall do that! What do you think? Thanks for helping me talk through it, sometimes I just have to work it out, you know?