Congratulations on putting together the tarp. The photos make it look very nice. Did you do it up in spinnaker or silnylon? I like the addition of the velcro "door" on the front beak. Let me guess, this was an afterthought?
When I completed my tarp using Jay's design I noticed that when setting the tarp up in the suggested way, the beak is so close to the ground one has to crawl to get under it. I considered putting in a similar velcro'ed opening to allow for easier access but instead simply use a different setup method which keeps the tarp higher off the ground.
Your method will keep the tarp edges very close to the ground which will greatly reduce precipitation finding it's way under. Not having a trekking pole in the center will give you the entire span of the tarp to move around under which will be simply luxurious in terms of tarp camping.
Once again, nice work. I'd love to see some close-ups of your seams and tie-outs.