I can't believe you had the same idea as mine! XD
Even with that polar bear... My depection of winter is riding on a polar bear and fighting againts spring (sort of...)
But you know what they say... great minds thinks alike (or something like that :P).
You manage to reverse the common ideas and feelings about spring and winter, and I think it's very refreshing.
Great coloring, and great expression on winter (poor guy.. or child?), it's very relatable.
I'm also not a native speaker so I guess you didn't mind if I made some grammer mistake :P
Anyway... Good luck at the competition!