Step 14
Ungroup the lines you just expanded and adjust their horizontal length.
You cannot give strokes a gradient, so, using the Rectangle Tool (M) draw a very thin rectangle and give it a slightly darker blue gradient. Draw a small curved line and give it a darker blue color too.
Step 15
Place your new elements on the page curl section.
Step 16
This is what your design should look like right now.
Step 17
Easily make random stains on the paper by using the Artistic Ink panel. Go to Brush Libraries > Artistic > Artistic Ink. You can drag the swatches right onto the page or you can draw a line using the Pen Tool and apply the swatch to the line. To further edit the ink swatches you'll need to expand the ink first.
If you're familiar with Illustrator you may be able to recognize when someone is using built-in ink swatches. To remedy this simple alter the ink swatches by using the Crystallize Tool (found under the Warp Tool, Shift + R.) Or, try using a variety of warping tools to achieve some interesting results.
Step 18
Give your stains some gradients, set their Transparency to Multiply and adjust their Opacity to help them blend with the paper.
