dude,why is it soft? intentional? i think if it was crisper it would look more proper.
i guess the left side of the photograph had to pay the price of having only one flash,nevertheless,the lighting is well managed.
i think the model wearing black bottom didnt help in giving detail for the anatomy of her legs in contrast to the background,and i believe if she looked into the camera it would made the pic alot more intense.
the top of the hole in the wall being cropped made me a bit skeptic regarding the framing of the photograph.
the wall has so much decay it gives great amount of detail and i must say the location is just fantastic and i hope i can see more of the shots taken in the same location.

one last thing,i wonder if u had an extra light source,and u placed it inside the location to the right of the model as a back light source,would that give more accentuation to the models details?

over all,its a Job well chosen and well done,i salute ur choice of location and model,and wish u get more equipments to expirment more.