I have messed up on a couple characters and it always haunts me. I felt like I should have done better with Cassandra Kane. I definitely didn’t get Firestorm the way he needed to be. I don’t think I got Ares quite right in Wonder Woman.
It happens. Sometimes the reference you get is old, or you just miss the mark.
But for me, it always sticks with me, I wince a little when I think of it.