hebele I also got hit with the disorganization on the blues for beginners lesson 7. After some fiddling I found the sheet music for it. The pdf has some copy/paste errors, some lessons are duplicated, out of order etc. And then quickly realized it doesn't exactly match what Christian plays. He holds some notes which is missing on the pdf. I think that is artistic interpretation
Yeah, sometimes the sheet music doesn't match. Luckily, 90% of the time, his sheet music fits very good.
Now to the good points:
You got the blues! Slow swing, the blue feeling, all is there. I would say this is a big step up from your last one. It sounds way more polished. And the best bit of your recording: Christian played the 8-bar lesson straight, not in swing. Well - what should I say - last time we told you to swing more and you did it. It sounds good in swing. It is blues. You managed two things in one lesson - learning something new AND applying swing by your own. 
If anything, second 53 sounds a bit strange, but it does not sound like you learned something wrong, it is just one wrong key. A random glimpse.
hebele As usual, I've checked @Sophia's take afterwards and it is better
Don't compare yourself to Sophia. Maybe it is time for Sophia to write all her musical heritage into one single page. The stuff that she was born in a family with all musicians. Professional musicians. That she learned guitar. Had earlier experience with piano in her life. No wonder there are people calling her annoyingly talented. (No, not me. I would never call her this. 
)
