Step #2 – Fill in space now with ideas below.
A.broken movements from chords you just created
B.Chordal progressions, tritones, half steps, 2-5’s
C. Bass note movements
D. High comping
Step #3 – 3579 voicing for minors could take 11
Step #4 – Add intro and outro that would lead another player in. 4 or 8 bars. Not something rubato.
#5 – If you want, practice LH bass notes with RH improvisation as demonstrated in the video.