Honestly I think lekku, head tails, whatever, in live action have always kind of looked like pillows attached to somebody's head. I'm also not as concerned about getting the look right as much as I am the characterization. Live action Ahsoka looks different than animated Ahsoka, but Rosario Dawson does a great job of making it still feel like Ahsoka because she has the character and mannerisms down almost perfectly. If Winstead can make it still feel like Hera I don't really care if the look is off.