Create Layered SVGs in Inkscape – Create and Sell SVGs – Inkcape Tutorial -Sell SVGs on Etsy
http://www.youtube.com/watch?v=rjrUgwvSk-I
http://www.youtube.com/watch?v=rjrUgwvSk-I
http://www.youtube.com/watch?v=o2Bx4wmCAOI
https://www.youtube.com/watch?v=cP6zhG3Evzs