heyho! i've tried different tools of painter x and i found some that i really like.
they are called "Artists’ Oils" and the feeling of those brushes are awesome!!!
here's a sketch painting i've done with these brushes:
today a friend wanted me to design a special hairstyle for him.
then i found a great painting: http://waheednasir.gfxartist.com/artworks/163027
and i tried to achieve the same wet effect with corel painter.