Glad you like the lesson!
Thanks for sharing this with me!
I think you should work on cleaning up your technique a bit. Mostly avoid all the unnecessary strings while playing. That can be done by using the palm of your right hand to cover the strings you are not playing. Usually that will be the lower strings as they are the ones that tend to ring (it's also easier to mute those with your right hand).
Also spend time working on basic rhythm exercises with a metronome if you have one. If you don't just use this one: http://www.metronomeonline.com/
No need to do complicated rhythm exercises, maybe just play a scale in eights (2 notes per beat), then move on to sixteenths (4 notes per beat) and don't worry about speed but accuracy.
I think working on these two aspects will really help you sound even better.
Keep up the good work and thanks again for uploading!
Don't hesitate to ask me as many questions as you need. It's always a pleasure to answer. :-)