April is still my favorite after all this time, I think it's just so mesmerizing and feels complete.
About your style, if you found one you like and are sure it's what you want to be doing then that's great, but I generally encourage people to not limit themselves and try out different things. There are a lot of artists here who only do one thing and that's it, and who knows if they would be successful with another style because they never try. To me, Newgrounds isn't the end-all be-all of art, so it's not where I'm expecting to create my brand which takes some of the pressure off. But this is a mouthful.
I'm happy you got started making money from your art, can't wait to see what you bring in 2016. Also just a note, I wouldn't include this in the art portal since it's not original work necessarily.