There's the fail. I very carefully removed some ruffles, but it didn't go well. Well, I started started removing ruffles carefully, but then after I made a bunch of little but noticeable holes, I gave up and ripped the second ruffle off (those are the bigger holes you can see).
I'm pretty sure the real root of the problem was not having a clear idea of what I wanted it to look like. After I realized my original idea wasn't going to happen because I wouldn't have enough shirt left over, I didn't take time to adapt my plan.
It started off well, at least: