Please comment on submissions. This is a process and not a miracle event. Guide designers through the creative process if you want them to be active and if you really take care of your contest, although it is a non guaranteed one..
Thank you

Ok

I have multiple private message discussions with designers, sorry for now having put the feedback public too. But they have written to me private. Thanks for your understanding!

There is non need for PUBLIC feedback. Just add comments and direction on specific submission. You are the art direcyor here...
That's all. Thank you so much