Shading Practice (Watercolor Brush)

Just trying out a different way of shading, it's a bit more work (I expected it to be) but I like how it looks.
As always, but especially on pieces like this where I'm trying new things constructive criticism is welcome.
Also, it wasn't what I planned (I was just coming up with it as I went along), but he ended up looking like a Tokyo Ghoul OC