My hand hurts but I'm really happy with the results so far. I've finally found the tools I need to draw well in PS. Here is the link: http://imaginismstudios.blogspot.co.il/2012/06/30-free-brushes-smudgers-erasers-to.html

I highly recommend trying out those tools - they're free to download and really allow you to paint without stopping to find the right brush or something.