Great job! I loved the train and the cross scenes. Although you didn't use any words I could still sense some sort of a story and some vivid emotions was portrayed through your shots in my opinion. Fantastic scores. In complete sync with your shots. Overall i think u did a fantastic job.
I'm afraid I can't critique these for u since I'm not at all familiar with negative shots. The only suggestion I can give u is if u could come up with a story for a short film and put these in your film , you are gonna get a great result. With a descent story u r gonna have a chance in festivals I think.