The thing about writing is not to talk, but to do it; no matter how bad or even mediocre it is, the process and production is the thing, not the sitting and theorizing about how one should write ideally, or how well one could write if one really wanted to or had the time.
It is not enough to ask yourself, 'Does God's Word permit me to use these good things of the world?' You must also inquire, 'Will it serve the glory of God?'and, 'Will it edify my fellow Christians?'