Hey Tinpan - thanks for the kind words!

Check out these Clapton songs for some acoustic blues without slide:

Before You Accuse Me:

https://www.guitartricks.com/lesson.php?input=13823&s_id=853

Me And The Devil Blues:

https://www.guitartricks.com/lesson.php?input=24409&s_id=2002

Keep working on curling that finger on the E chord! With consistent repetition, you should see an improvement as the muscles loosen more and more!

Mike