Crow, why would you take the time to map something and then refuse to explain what you did?
A and B are the back of the tent.
C is the front of the tent and should be partially transparent with a star passability setting.
D is the side pieces. They're apparently one pixel off the grid, so you'll want to fix that in an image editor of some kind.
E is the little top bar thing.
F are the side bars, and G is what you use to fill in the gaps of the bars.
The floor should be self-explanatory.
Does that clear things up?