What do you do after you pick a song, then practice its scales, arpeggios, and chromatic figures? Essentially you have several tools at your disposal, but these tools alone are not music.
My teacher Steve Anderson suggests this: a few times a week, spend some time playing rubato* and slowly try to integrate the elements you have been practicing into a rich, beautiful line.
Pick a tempo as slow as you need it to be, and just sit down and try to play something beautiful, relaxed, and smooth.
*A note about my new understanding of rubato: you are playing in time, but the time is malleable. It’s different than just playing out of time.