One of the big myths around music production nowadays is that you need to be able to play an instrument or have had musical training in order to be able to do it. The truth is that the majority of producers - including successful producers - don't have these skills, either. Many producers have never DJed, either!
As long as you love music, have a great idea about what you like and don't, and are passionate about wanting to get that music "out of your head, and into the world", you have what it takes to produce music. This method assumes none of the above.
Of course, if you can play, you do have musical training, and you're an experienced DJ - great! But whether or not you have these skills, the method will work for you.