P.s. : Alternatively ,
you can copy and save the sigil
(((( image from here on your pc/laptop, open it up in microsoft paint - ctrl+a to select the entire image ctrl+x to cut it – work out the *size of the sigil (ctrl+w) or (ctrl+e) for the paper size, or manually - repaste the image with ctrl+v, *resize it small enough so you can add your petition/text))))
and draw over it with a black marker (for example), it may work as well to open up the sigil multi-dimensionally.
(just tried that right now with another sigil- so that works too apparently… ow YeaH 
)