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If the layer is locked it only allows marks to be made on the part of the layer that has color. Black through white and every color in-between.

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1. Create a circle in Sketchbook and give it a solid fill with black.
2. Click on the padlock in the lower left corner of the layer.
3. Change the color of your pen and draw on the layer. See where the color works and where it doesn't.
4. Make a new layer and draw a shape with a thick line.
5. Click on the padlock to lock the layer.
6. Draw on the layer and see where the color works and where it doesn't.
7. Make a new layer and draw a shape with a thick line and fill it with white.
5. Click on the padlock to lock the layer.
6. Draw on the layer and see where the color works and where it doesn't.

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1. Upload this mandala into Sketchbook.

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Go to the select tool on the top bar and choose the magic wand tool.

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Click on the black color outside of the design.

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Choose the noted eraser and then make sure both toggles are moved up. Erase the black. It should look like this image.

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In the selection tool click the deselect. Your image should now look like this.

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Make sure your Layer transparency is locked.

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Hide your background to see what will be colored.

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Choose the airbrush and start coloring! Try different brushes and see how it changes..

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Find a black and white design and add color to the black parts.

A more simple design will score in the 1-2 range.
More complex designs like the Mandala we worked on here will be in the 4 range.