You explore the theme too good!
I don't no if you want add some "significates" in this game, but the idea of when we are kids, everything looks like bigger and when become older, everything becomes hard works perfectly!
For the gameplay, the mechanics works good, the controls works very well for this precision game, the sfx/music are very atmospherical for the game gender and the dificult progression in all stages are perfect (seriously, YOUR LEVEL DESIGN IS SO FKN AMAZING!!!).
Anyway, you realy make a master piece. 10/10, one of the bests so far.
Cograts ;D.