Well done.
What I like
1. The way you pinned the flower blood to the torso is very clever and woks very well.
2. The poses of the minifigs.
What could be Improved
1. Perhaps you could add a window or a barred window (as a jail) to the wall. It just seems a little empty if you know what I mean.
2. Do something to change the symetry about it. It looks to symetrical! It might be just me, but I think that really degrades the quality!
3. Use more SNOT. To make it more realistic I would either use SNOT or tiles on all of the surfaces.
If you take this advice or not, this is a good entry and well worth the time and effort to look at.
Keep up the good work, and good luck in the competition.