Here's a stencil template to play with! Click the 'original' link to load the full size image. Instructions: Just print it out, photocopy it to size, stick it to a bit of cardboard and cut it out using a sharp blade, then paint throuth to wall using a dark coloured spraypaint! Sometimes it's handy to either use bluetack or sticky tape to hold the stencil flat to the wall when painting. Have fun!