This is the 4th part of this Photoshop tutorial. Next, in the main content area, create a curved path on a new layer (image a). Set the brush to 7 hard, the foreground color to C5C5C5, and then right click on path layer in it's corresponding panel. Choose "stroke path" from the menu, and it should create a thick curved line, as shown in image b). Make a selection using the curved line and fill a new layer with a darker grey (525252), Feather (select > feather) the selection by 1 pixel , contrac (select > modify > contract) it by 2 and then delete the selected area. You'll then be left with a shaded thick line.