For chording, you can start with learning every chord inversions of every chord everywhere possible up and down the neck (and I don't mean just barre chords). For each of those chord inversions, learn the hammer-ons and pull-offs that you can do (for embellishment). Learn to incorporate some single-note lines with your chording. Learn to vary your strumming pattern to fit the song. Learn different strumming patterns in different styles and signatures. There is more to chords than power chords on every down beat.