Preparing to Preach

I'm trying my first attempt at preaching a Psalm this week. I'm preaching from Psalm 54, which is related to either 1 Samuel 23 or 26. Here's the text of the Psalm (ESV):

TO THE CHOIRMASTER: WITH STRINGED INSTRUMENTS. A MASKIL OF DAVID, WHEN THE ZIPHITES WENT AND TOLD SAUL, “IS NOT DAVID HIDING AMONG US?”

O God, save me by your name,
and vindicate me by your might.
O God, hear my prayer;
give ear to the words of my mouth.
For strangers have risen against me;
ruthless men seek my life;
they do not set God before themselves. Selah
Behold, God is my helper;
the Lord is the upholder of my life.
He will return the evil to my enemies;
in your faithfulness put an end to them.
With a freewill offering I will sacrifice to you;
I will give thanks to your name, O LORD, for it is good.
For he has delivered me from every trouble,
and my eye has looked in triumph on my enemies.

I'm excited.