From the sounds of it, you are pretty new to magic. Either that or I might just be judging based on the way you typed the question...
But anyways, your effects will develop with time.
A lot of people create things differently. I don't usually sit down and try to come up with a trick. I am a song writer also, and whenever I try and just write a song, It isn't as good as one that was fueled by an emotion or an event in my life.
Same goes with magic, if I sit down and try to create something, it generally isn't going to be great, but if you just fool around with things you might edventually think of something.
Creativity is something some people are born with and it is also something some people have to work to come up with.
Good luck on your effects your working on right now.