1) Roll the perforating tool (From Stampin Up's Cutting Kit) lightly on the Craft ink pad.
2) Then roll it along your paper (medium pressure seems to work well.)
3) Re-ink for each line & Emboss it with clear e.p.et voila you have textured faux stitching.
You could use a high ruler--like the Stampin Around wheel guide--to get straight lines, but curved lines are super-easy
I went to your blog and loved the third and fourth image - the one done on black - how did you get that look and what was the stamp you used. Can you please send me the directions? firstname.lastname@example.org