Well hun, to answer your question of getting him to make more of an effort with you, I would have to stop you right there. You can't make a guy do anything, it has to be him all the way. I would suggest that you continue to be yourself. Guys also like a bit of a challenge. In my psychology of gender class, we talked about how confidence in who you are is attractive but also not appearing too desperate. Just be yourself and act natural. You can follow the other stuff too if you wish but I would highly suggest being natural.
As to getting past the other girls, I will have to say that girls can be very vindictive and cruel. Some girls may be very jealous and look for ways to lash out at you. Girls, according to what I've learned in my psychology of gender class, show their anger through a more relational outlet; whereas, boys show their anger physically outward. I would prepare yourself for what may come. It does not mean that something will happen but I would just prepare myself for roomers, arguments, name calling and stuff. (If that is not what you mean by getting past the other girls, then read the next paragraph)
If you mean standing out from the other girls, I would say learn a bit more about the guy and maybe ask him about it. For example, if the guy likes football and you don't know about football, you could ask about football. I would still, as I said many times before, be yourself.
I hope that helps. Good luck.