Changing sigs/making cheat undetected

So I am a bit of a noob to the public cheating scene, but after all I am just doing this to help out. I have no idea how to randomize sigs efficiently (because I just mix my program around manually and add junk code manually). I want to release my glow public but I fear that it will get detected and I will have no idea how to change the sig. How would I go about randomizing it?

I put //Junk between most lines of my code and have my junk code program insert junk when line[i].contains("//JUNK");