I started knitting Damask, a really beautiful bottom-up shawl, here I stole a picture off the internet of it for you. Here's a link to the pattern on ravelry.
I have never knit a bottom-up shawl. The premise of this shawl is that you cast on a huge number of stitches, something between two hundred and three hundred depending on which size you decide to knit... You're casting on the frilly bottom of the shawl instead of starting with a small amount of stitches and working downwards.
Mine looks like this...
I'm knitting it out of madelinetosh DK in Toasted Pecan. It's lovely yarn. Let's hope I don' fuck this shawl up!