I totally agree with Laura, practice first. My first crimps looks like car wrecks, and I had a hard time getting it. Also, make sure you have a good crimping tool. The first one I had was cheap,and it was a piece of junk, then I got a bit more expensive one (not really expensive though) and that one worked a lot better, so do check you pliers and see that it is doing what you need correctly. Good luck. You will get the hang of it, hey...if I did, anyone can!!!
Linda