Why has Nyx's ears suddenly became more bat like all of a sudden?!

Thanks to me watching Bartok the Magnificent the other day I was thinking why don't some of my bat characters have ears like Bartok's as they do look cute and more batty, after some practice I found what certain style of ears I wanted to use, I really much prefer the ears Nyx has now, hope you do too! :)

Everyone goes through character tweaks, at any chance they may look better than before.