Actually my biscornu (my February TIF challenge) has been finished for some time - all that was missing was the photograph. Now there is no excuse for losing a needle! In the meantime I have almost finished a needlebook that will match. This is in addition to another biscornu which is intended as a gift for a little neighbour.
I was very happy with how the two sections joined up. I followed Elizabeth's (from Quieter Moments) instructions - some time ago she gave a very detailed account of how to use back stitch for just this purpose - thankyou Elizabeth. It provides a very sturdy seam - I can't imagine how I might have improved it.