I was asked recently about my process and the only thing that I can really say is for me it comes down to three things. Inspiration from the outside world, procastination from the inside world, and some down deep determination to get freaking better. .....so I just write it over and over and over again.
Because when you're a writer, and you don't have these:


All you have is this:

First doodle:

Then free form babble:

Over:

And over:

And over: