Ten Commandments for Preachers

Sinclair Ferguson asks:

What Ten Commandments, what rule of preaching-life, do I wish someone had written for me to provide direction, shape, ground rules, that might have helped me keep going in the right direction and gaining momentum in ministry along the way?

Here is an outline of his answers:

Know your Bible better.
Be a man of prayer.
Do not lose sight of Christ.
Be deeply trinitarian.
Use your imagination.
Speak much of sin and grace.
Use the "plain style."
Find your own voice. 
Learn how to transition.
Love your people.

You can read the whole thing here.