Thanks guys :-)
astonh - There's a really good tutorial and information here on this website
. If you make the paper tape one you don't have to stuff it, the tape hardens enough if you have 4 or 5 layers.
cando - I got the circle shape after much trial and error! Basically I plugged the numbers from my gauge swatch into a computer drawing program (Adobe Illustrator) and it converted my drawing into pixels which I then used as a chart (phew). I knit this on long cable needles and did the increases at the bottom by wrapping the extra stitches around the cable and then did the decreases at the top by doing wrap and turns. Since I still have all the stitches on the cable I'm just going to go around and BO with an i-cord BO. Hope that makes some kind of sense...