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Create a new document with white background that is approx 300 x 300 pixels. Use the paintbrushtool with the diameter 50 pixels and draw shape of a tube. |
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Select the shape with Magic wand tool. Add a new layer and fill the selection with a grey shade. Apply the Gaussian blur filter with radius 11. |
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Go to Filter / render / lighning effects and use the settings as you can see here to the left. The light direction shall be from top left.
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Now, use the line tool (2 pixels) to draw some black lines. |
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When you're done, hold down Ctrl at same time as you click on the layer with the black lines. Add a new layer just beneath and fill the selection with white
Add Filter / Blur / gaussian Blur with radius 1 and set layer transparency to 50. Use th move tool to move the white lines slightly down right. |
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go to Image/ adjust / hue-saturation and colorize your tube |
