“I will worship you” is perhaps the most popular praise for young people. Two verses go in different chord so let us compare them. Accompanying along with only piano might have one drawback but I think it also has a good thing to play the chord as I want it to be.  You do not have to think to break down thy rhythm just because it is only one piano. Avoid the excessive Arpeggio method with left hand but find a way to beautifully express the melody line with your right hand. One additional thing is do not throw away the chord, just use your right hand to express the chord and melody.

I hope you have not forgotten Song form. Stay a lot during verse and use Arpeggio. 

Mainly use 4 beat rhythm for chorus and make a line by transpositioning the chord.