Now for the 'countermelody' material - the little 'answering' melodies in between the main right hand melody phrases.
Watch/listen to the full performance again. The countermelody phrases are indicated in this video.
In the full performance version of the Blues in Two Keys, you repeat the first E minor strain, and that's where the counter-melody material first appears.
Here's the first example.
Here's the second example.
Similar, but not the same...
Again, there are usually small 'tweaks' when something comes round a second time.
And here's your full and final version, with the manuscript (music) overlaid.