aaronjayl,
Great shelter! 9.5 on a scale of 10, If I may say so!
Food for thought, I assume you packed it with the 10 or 12 inches of debris like you said, that is good, the more debris the better.
Since you are in Maine, let's talk COLD weather, it's coming.
I like the site, next to the large rock. Shelter from wind.
For cold weather, I would build so that my doorway was facing the rock, and that I could have a fire against the rock. The heat would reflect back toward the shelter, and also be absorbed by the rock. Just not so close you set your shelter on fire.
Also for Cold weather, I'd stuff the inside with tons-o-debris. Lots and lots of leaves. The door, as mentioned would also help in cold weather.
If windy, lean some more sticks on the outside finished product, so that the debris doesn't get blown off (all hypotheticals, of course).
If it was rainy cold weather, it would be nice to have a hefty trash bag or two (From our handy dandy survival kit), or a poncho, or piece of plastic, as the first layer over the frame to ensure water tightness.
Just discussion points for everyone.
The shelter, as built, is textbook.
Fine job!!