When I was 11 I drew this little bit of embarrassment: http://aulora-lyon.deviantart.com/art/Brambleclaw-323925863
Yesterday I turned 15 and decided to finally redo it, just to see the progress and I'm so happy to have moved from that point.
Aye, it only took ruining many, many math notes by covering them with little cat doodles for 4 years straight.