Are we supposed to have... myopia?
I usually don't care about age differences between characters and stuff like that, i actually think those can be quite interesting.
But here, they are deliberately trying to make us believe that Tilly is about the same age as Teddy and Gertrude... Whaaaaaaaaatt? The difference in this one was just too obvious for me, it ended up being a distraction everytime Tilly was with one of those two on screen. Maybe I'm being over-scrupulous about this, but it was not something i noticed in the beginning and then got over immediately, it did keep popping into my mind during the whole film!
Anyway, great piece of art :)