Hey Wolf,
I'm sorry you failed. That really sucks!
There are a lot of other places you can try offcourse.. But you chose EC for a reason I geuss. Good luck finding something new!
The drawing is indeed a mechanical picture. Gears, chains, rubber bands.. Just try to learn the words
I for example forgot the word gear.. (sorry Gina! xD)
I discribed it as a circle, but the outside is not a line, it looks like the top of a castle wall
The observer loved it!!
So just try to draw as accurate to the information you get and try to explain everything as good as possible!!
Good luck!