
In this tutorial, we will learn to create an abstract background in Illustrator CS3.
Make a rectangular path and fill blue gradient.

For the Gradient window choose blue and light blue colours.

Apply the gradient.

Then draw paths in new layers and paint them.

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Then, move to Blend Options and choose the following settings:
Go to Object > Blend > Make.

This is the result you get after this step.

To get this great design.

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