Well, it is pretty simple. You need to first start out by asking yourself "What do I want to achieve after I cast this spell?" When you have done that, you need to write out what you are going to do to cast the spell and when and where it is going to take place. An example: If I wanted to, oh lets say, keep my in-laws away from me for a month, I would set it up the ritual to be done at midnight on the night of a new moon, I could add items to make the spell more powerful, I could add candles or an alter, or something along those lines. You should then create a chant that you will say (doesn't have to be a chant, it could be more of like a declarative statement like "In-laws, stay away, this just makes it so you can own what you want to be done) when you are casting. Also (THIS IS IMPORTANT!!) in order for your spell to successfully work, you have to put all of your energy into it. You have to really REALLY want to achieve this. And... that is pretty much it:) Hope this helps!