Building rounded or curved gingerbread is not easy so this is very impressive for a first project in this medium. One thing I notice about your piece is that you allowed some gingerbread to be exposed on the gills of the mushrooms... This is something I learned the hard way on my first gingerbread house. The more places where you can allow the gingerbread to be featured the more people seem to like the pieces. Very nice work!
Here is an example of gingerbread doing a peek-a-boo as the window frame of my UP House:
Below is an example of my favorite piece from our local gingerbread show and auction that was somewhat overlooked by the judges. The Space Shuttle was mainly constructed from gingerbread (curved gingerbread) by Christopher Julian. I felt it should have won an award but I think the judges didn't realize it was gingerbread!
So my words of wisdom for you are make sure you keep strategically exposing your gingerbread on your pieces and you will be 1st place gingerbread maker in no time!
You can see more photos of the Gingerbread Space Shuttle
and Gingerbread UP House
at these links.