I believe myself that a good writer doesn’t really need to be told anything except to keep at it. Just think of the work you’ve set yourself to do, and do it as well as you can. Once you have really done all you can, then you can show it to people.
But I find this is increasingly not the case with the younger people. They do a first draft and want somebody to finish it off for them with good advice. So I just maneuver myself out of this. I say, Keep at it. I grew up recognizing that there was nobody to give me any advice and that you do your best and if it’s not good enough, someday you will come to terms with that.