What are some things I can do to make me seem better to colleges? (i.e. start a club, competitions, etc.)
Do something that no one else is doing.
Do things without thinking about how they might seem good on a college application.
Get really good grades and be really, really good at baseball, football, basketball, track and field, soccer, rowing, volleyball, golf, hockey, squash, lacrosse, swimming, fencing, wrestling, or water polo.
Write good and original essays.