How to make this [link]
and this [link]
In description, I used "Gamut Mask".
If you want to know about it, go here[link]
If this help your drawing, I would be happy! X)
Recently, I noticed somethings, so I added description.
But it's really rough.. if you had some question, feel free to ask me in this comment.There are some people who can't have "Lumi and Shade" layer in their SAI. Make sure of its version (Newest version is 1.1.0 ( April 2012 ).
If you had an old version, you can download newest version from here [link] ( SAI official site )