After quite a bit of interest, I have decided to add the Tesserae Shawl pattern to Ravelry for pre-order. And as a reward for those who want to purchase early, the pattern has been discounted to £3.50 GBP until midnight GMT on October 14th, 2014! After that the price will revert to £4.50.
The final pattern will include full written instructions for both the half-circle (pictured below) and full-circle versions. On purchasing the pattern at the moment, the downloadable file includes complete notes on dimensions, yarn / yardage requirements, tools and gauge.
The pattern can be found on Ravelry here. (Please feel free to repost this offer!)