Hello,
I´m New in Paint.net, but i thing that is a Great alternative to Paint.net
This is some test that i was doing with Paint.net
http://www.flickr.com/photos/henryromero/sets/72157622103557146/
This was done imitating some Photoshop Tutorials from Photoshopessentials.com and And Adapting to Paint.net
God Bless you