Masks Page 4

Although the image we are using as a reference does not have any shading, I have added some simple cell shading and highlights to demonstrate how to use the Reverse Mask Tool.
 
Mask Step-by-Step Tutorial Page 4
 
  1. Pick one area of the drawing where you would like to add a highlight or a shadow. You must do this step one area/color at a time because the Mask Tool will only recognize one color at a time to mask. In Box Seven, select the Reverse Mask Tool. Although I have done more than one area in the illustration, let's say we will start with the shadows in the orange/hair area.
  2. Right click on the canvas to pick up the color of the area where you will be adding shadows or highlights, in this case, the hair/orange. This color will show immediately in the color bars in Box Seven.
  3. Then, left click on the Mask Box of the Color Picker Window. The color in this box will not change until you have done the next step.
  4. The next color you pick will be the color you'll use to make your shadow or highlight; in this case I used a darker orange-brown. As soon as you pick it, the color to be Reverse Masked (orange) will show up in the Mask Box. Now, when you try to draw on your canvas, instead of the selected orange area being the only place you cannot draw, it will be the only place you will be able to draw. This allows you to put down the color for the shadow/highlight right up to the edge of the Reverse Masked area quickly and easily without going outside the selected area or interfering with your black line art.
  5. Repeat steps 19-21 for each area/color where you will be adding shadows or highlights or where you want to do any other additional work. (In the illustration I've added shadows to the hair, skin, gloves and dress and highlights to the hair, lips, eyelid and skin.) You can do anything you like inside the selected Reverse Mask area without affecting the other areas of the drawing. In the finished drawing on the next page, I find I prefer the cell highlights to the type used on the gloves in the original drawing.

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