By the way, you may notice that the screencaps starting from step 11 are messed up~~ They show that my Painter has two color sets; heck, they even make it look like I have two Painter windows open at once ><;; It's really just a minor mistake that doesn't have anything to do with the actual tutorial, so, uh, just ignore it, okay? ^^;

		Open the file in Painter, pick a skin tone and apply a thin layer of color evenly (by using light pressure) to the skin area (the face here) using the Simple Water watercolor brush. Make sure Wet Paint is checked on the Canvas menu. Don't worry about going all over the place - you can erase the unneeded stuff later ^^
		Apply shading. I like to use the same color with more pressure so the shades can look more natural~~ Mind where the light source is - if the light comes from upper left, the shadow will be on the lower right hand side.
		Choose a darker shade to apply a second layer of shading, so that there is more contrast between the light side (where the light falls) and the dark side (where the shadows are).
		Using Wet Eraser, eliminate the color outside the needed area (in this case the face)~~ Don't forget to erase the color on the white part of the eyes, too. The face looks a lot better now ^^~
		Apply light grey shades on the whites of the eyes, then color in the eyes. I generally apply darker colors on the upper part of the eyes, so that the highlights will have more contrast with the eyes when I apply them.
		Create a new layer above the line art layer. Pick the Digital Airbrush and apply white highlights on the eyes. To achieve the glowing look, apply a small area of highlight first using a moderately high opacity, then trace the edges using light pressure set on a low opacity (3%).
		Now pick a color for the clothes/coat, and again create the base by applying the color lightly and evenly using low pressure and opacity. This should be done on the canvas, with Wet Paint checked, using Simple Water.
		Apply the shading on the clothes, and be aware of the folds and creases of the clothes - they are very crucial in making the clothes look real~ If necessary, apply a second, darker layer of shading as you did with the face/skin.
		Erase excessive and over-the-line color, add necessary highlights using Wet Eraser, and you're done with the clothes ^^
		For the scarf, I don't use any base color because it's supposed to be white-ish ^^; Just pick a light color for the shading and give the folds and creases color~~
		Now comes the tougher part: coloring the hair O_o;; First, choose Canvas --> Dry; this will make life a lot easier for you XP~ Then apply a thin layer of black (the color of the hair) using low pressure and opacity, bla bla bla. Because now you've dried the canvas, it'll be very easy to erase the hair color that goes over the clothes etc... you will see later ^^
		Apply shades and hair strands by using more pressure and/or opacity (there really can be no color darker than black, so... O_o;;). Take special care to follow the direction in which the hair flows, so that the strands will look right instead of out of place.
		Clean the edges using Wet Eraser - it will only erase the excessive hair color, because it is the only "wet paint" there is on the canvas; you have previously dried the other colors ^^~ Neat, huh? XD~ Dry the canvas once again and add necessary highlights to the hair using Bleach, set on low opacity.
		Nearly finished ^^~~ Only a few finalising touches are needed~~ Here I add a background using Simple Water watercolor brush ^^

Here is how the finished pic looks like after additional touch-ups done in Photoshop ^^~ I truly hope this tutorial can be of some help~