Sounds like you're making pretty good progress. What I really think would help you is to find a friend or two to swap songs with. That way you get exposed to different ways of doing things, different interpretations, and such. It also helps you to nail down your consistency in tempo, rhythm and phrasing. You don't mention your location, but I imagine Catters would be happy to share with you if you are in their area.

Keep on having fun with it!

jeffp