It's ok if the points extend beyond the frame. We want them long enough to ensure all points will meet. We can trim later if needed, but I found no trimming was needed at all when I finished.
lay the bottom left wedge in place
[ATTACH=CONFIG]134814[/ATTACH]
Finally, lay the last wedge on top making sure all edges of underlying pieces are covered. It looks very close to the edge and all tips of wedges should meet adequately.
[ATTACH=CONFIG]134817[/ATTACH]