Step 9
Create some colorful tabs by drawing a rectangle and then using the preset gradients to color them in. To access them go to Window > Swatch Libraries > Gradients > Brights. You may want to make the highlighted color slightly darker as our design calls for the tab to appear as if it's wedged in between the pages.
Step 10
Create the ruled lines by first drawing two horizontal lines.
Step 11
Select both lines then go to Object > Blend > Blend Options. Select Specified Steps, enter a value then press OK. Go to Object > Blend > Make.
Step 12
This is the result. You can adjust the number of lines by going to Object > Blend > Blend Options.
Step 13
As is, the lines overlap the page curl. To fix this, expand the blended lines by going to Object > Expand.