yeah i see where your coming from mate
Im in college aswell. When your in college its actually a bit easier, you can just use general banter, and theres alot to talk about, especially if the girl is doing different courses to you.
Malls: if gorls are looking in windows, comment on it, if theyve got loads of bags, comment on it
Im pretty sure theres a day game section on this forum.
As for the magic tricks, if they dont fit in with your style/persona, dont go for it, what works for some people wont work for others, just develop your own style and use what works for you.
Rejection as in when you approach a girl and she blows you out? Just forget it, and move on the the next one, soon you wont get blown out

Or you could maybe try something sorta cocky/funny, my favorite is "oh, tough crowd" and then walk off.
If you get blown out though, there really isnt much you can do, so just move on