In this performance, you'll see that I'm not always playing the progression using the full chords. I'm outlining the chords by using their related pentatonic scales, making the tune sound nice and open and mellow. For example, the first chord of the song is C minor 7, and instead of playing the full chord sound I'm playing around with a C minor pentatonic scale, which actually contains a C minor7 chord in it.
I'm also leaving a lot of space while playing the chords, not playing all that much and letting the music do the work for me. I start to fill in a little more space and play louder on the last four bars of the tune (the turnaround), which brings us back to the top of the form. This is naturally where blues becomes dynamically louder. Take your time and learn the chord progression as it is without the fills, focusing on the basic chord voicings first. If you don't know the chords, you don't know the tune!