Well i been doing something but only a little, this days are really hard and want to do more 
Edit from Castlevania Rebirth


You still need to work on studying breathing animations.
As far as spritework itself, all good stuff.
I think at this point, you should do basically what The Plot Twist has been doing with his title, and make a mock up game from scratch. You have come a long way on improving your skills and it's looking really good at this point.
You should make a story, and plot a game on a thread. Maybe a programmer will see your stuff and then pick it up to be turned into an actual fan-game.