From what I can see, you display good leadership qualities, and does well especially in the science/math area. The top schools look for well rounded kids; those that excel academically, athletically, and mentally. You have got good clubs and volunteer work; but do you play any sports? And for some reason, those colleges love kids who are in the arts: acapella groups, band, orchestra, painting, creative writing, photography? Since your are from Canada, you are bound to be excepted into at least one colleges listed above (because they want diverse/international environment)