Wow, that looks really, really good. Nice job!
When I do tenderloin (which isn't often considering the cost) I always remember a tip I got from Alton Brown.
Measure 1/3 up the loin from the skinny tip, and cut almost all the way through. Then tuck it back under the large side and tie off with twine. This makes the loin more symetrical, gives more even cooking, and there is no waste!