11. Now on the 1st layer make a rectangle selection (use fixed size 130*12 px).
Right click to open menu and choose Transform Selection.

12. Right click again to open new menu. Choose 'Skew' and transform your selection like i have in the example. Hit "Enter".

Don't deselect! Hit Delete.

13. Now repeat step 9 (on new layer fill selection with #505F62 color and copy Effects from 1st layer to top layer. ).