I don't have screenshots. One time I was told that I knew how to keep comedy and serious moments separated, with how well I wrote the dialogue of the characters, so it sounded natural and in characters.
The negative one was with a prototype story. I made the MC to be someone that was done with...
Make sure you have a nice cover, blurb and schedule. Don't post everyone in 1 go. Give it time and post regularly.
There is not much wrong you can do other than failing on your tags and writing.
And write a lot. Don't expect much until you manage to push into the site a nice amount of words...