If International Smile would've been a single, her career would've been effectively over and the album would've sold like a Flo Rida or Jason Derulo album.
The first three single choices were good, but "Roar" should've been out a month earlier and "Dark Horse" should've been the second single. "Unconditionally" would've still been suffocated a little, but it would have given "Birthday" time to breathe. WOA or LL should've been the fifth single and either one could've done well. WOA would probably have done better WW.