Stephen W. Hiemstra
If you want to become a writer, you need to write as much and as often as possible. To improve your technique, read books about writing issues every now and then.
Remember also that you write in context. My blog, for example, has an "online pastor" theme. I write about pastoral concerns and issues. My writing supports my ministry in person and extends my pastoral training. My writing persona arises out of this pastoral context. This context therefore defines the boundaries of who I am and who I am not as a writer.