OK next school year I want to change my look. What should I do?

Ok I have been growing out my hair for a year and a half and it's about 2 or 3 inches past my shoulder. I usually put it up in a pony tail because I have no idea how to style it. Plus i want to get my eyebrows done. How am I supposed to know the right shape for them? Should I go to a pro? And at my school, we're only aloud to wear a small amount of make-up. How can I make my face look great without any snoopy teachers notice that much?? I need help because I look AWFUL