How to use ruling pen. Draw sharp lines and hard edges using acrylic paint.

In this video I answer some of the questions I got on how to use a ruling pen to paint sharp and hard edges and lines using acrylic paint. #acrylicpainting #islamicart #arabicart #geometry #geometricart #islamicgeometricpatterns #islamicgeometry #arabicgeometricpattern #islamicpattern #arabicpattern #islamicartuk #islamicwallart #homedecor #islamicdecor #acrylicpainting #islamicart #arabicart #kufi #arabiccalligraphy #arabicart #islamicartuk