We're shying away from the 'pot' leaf but were hoping for something with leaf veins maybe? Also, if you could change the 'o' and 'w' to combine in a from of the 'ok' hand symbol, I think that would be awesome. Here's an example of the gesture:
http://thumb1.shutterstock.com/display_pic_with_logo/548344/120113314/stock-vector-human-okay-hand-sign-ok-hand-symbol-ok-symbol-ok-sign-icon-hand-okay-sign-man-hand-showing-ok-120113314.jpg