I want to start with the basics. Cloning, if you didn't know, is how people make intros/outros into one sprite. You can use a variable, or costumes. I used to use variables, but now I use costumes, because I think less variables are cleaner. (Sorry for making you read xD) In the comments, say which you want to learn, then see inside for some examples.
If anybody wants too, you can follow along with me and @-superwooper- to learn how to make panzoid intros.