Pair 215:
1. Changed the O Unown's eye from fully open to half-closed
2. Removed the right-most tooth of Duskull's mask
3. Changed K Unown to I Unown
...Why did that last one take so long? Should have gotten that first.
Pair 216:
Much faster on this pair. Stared at the inner stars of those stickers for a while without noticing a bigger one changed.