Everything looks really good dude, but Im agreeing with Socks a lot here on the Pirate painting. You seem to paint in a very formulaic way, and you paint that way all over. Everything seems to have that photoshoppy hard round brush look to it where you not going into detail. Like the head and shoulders look good because the detail is giving it a certain feel. But where its looser, like the background, it all seems a little formulaic and un-interesting.
I would strongly recommend looking into working with more textured brushes and ones that have that real world painterly look to them. It will give the areas which are out of focus a less stale look to them. Just some simple brushes which have a little texture running through them, nothing too fancy.
Its sounds like a tough crit but its pretty minor, everything else you've got going is pretty good. Just the way you paint could be spiced up a little bit here and there.
Keep up the good work.