See, I have learned through experience that evidently I don't know how to write a winner, so I try not to concern myself with that.
To those who believe that they will never win a challenge, I offer myself as an example of the unlikely happening eventually. This challenge started April 2010 (that's right 13 years ago) and if memory serves me right I entered every 75 save 4 or 5 and in 2 of those cases I was eliminated for faulty word count. I went more than 10 years before I won a contest. (I had one tie fairly early on, but lost the tie breaker in decisive fashion receiving only one more vote in the tie breaker than I had in the contest.) But over the years either my writing has gotten better or something, and now I've won two in the last three years. I believe that anyone who continues to write stories and listens to criticism and tries to apply it has a good chance of winning eventually. I believe the key thing for me was when @Bren G said he thought I needed to punch up the endings. He thought my stories were good but that the endings lacked that certain something. That may not have been the reason but the two times I won I had what many people thought were strong endings.