I made a toile! And it helped!
Pattern: McCall's 6027
Cut Size 12; probably needed to cut a 14, but I foolishly only bought up to size 12
Seamed everything width-wise with a 1/2" seam instead of a 5/8" seam
Made the shoulders 1 1/4" seams instead of 5/8" seam.
To do fixes for final product:
-lower the armhole by about 5/8" due to the additional shorting of the straps.
-possibly cut an armhole that comes in more narrowly than it currently does. The straps are falling off my shoulder because they are too far apart.
I think I'm going to make this dress in a stripe-y cotton broadcloth from JoAnn's, first. As long as the stripes are vertical at my waist, I think I'll be okay. It'll need some major styling, though, to look cute. The boy wants me to make it in a wool/acrylic-blend plaid that I bought. That may be more practical for the winter. Here's to hoping I'll have a M6027 FO to show soon!
P.S. Again, this picture was taking during finals! Hence the random notes, books, and messy bedsheets strewn around. I like to think I'm not this messy all the time.