Originally spotted this on Apartment Therapy, but am sending you the direct how-to link to this crafty wall art idea:
http://jenloveskev.com/2012/04...l-and-yarn-wall-art/

I remember doing the string/nail art on black velvet back in the 70s. Liked it then, still do, even though I don't have any now.

My Life, everything old is new again. The fact this is done directly onto a wall puts a fresh spin on the idea.