For taking pictures with the arms down, easier said than done! I don't have anyone I can get to take pictures of me, so it's just me, my camera, and a mirror.
Gorgeous Things, I tried pinning the fabric out of the front, as you suggested. It only made things wrinklier. You know, I've made this dress before, sans boning, and I have not had the wrinkling problem. Perhaps it's a symptom of the boning curving in the boning channels and pulling the fabric in slightly irregular ways?