I'm trying to give feedback as much as I can. It helps me to see mistakes that I make in my own writing, but from a more distant perspective. I feel the effects of those hits and misses instead of just assuming that a particular attempt works.
Today I learned the importance of having a full story, one that isn't too thin. I guess this is where subplots and plot layers come in to give a story some heft, and also help to turn things in new directions. If everything hurtles toward the end in a straightforward path, there's nothing much to engage me.
So, I'll keep that in mind when I'm thinking that the plot I have is "enough."