http://tinypic.com/usermedia.php?uo=adkBqYNLltuh7KnyaRuDbYh4l5k2TGxc
On this repaint you can see that there's a layer that kindda looks like highlighting effect, or should I call it a gloss effect? And I wonder how this is possible.
As far as I know, alpha channel controls the general reflectivity of the texture, but in this case, it looks like something is added on the top of the painting.
I can see that this is a sensitive topic to discuss about because this work is done by a long time progress, but it would be more than greatful if anyone could give me some information.
It doesn't have to be perfect, I just need some slight tips or the general idea of it.