Here's what Dean Wesley Smith has to say:
1… How many words have you written in fiction since you started trying to write? Mystery Grand Master John D. McDonald used to say that all writers starting out had a million words of crap in them. I started selling stories just short of the million word mark and have sold some of my stories that I wrote between half-million and that first million. However, because of a house fire, I can’t look back on any of the words before that.
But if you have a bunch of stories done, maybe a novel, and have been working at writing for a time, I think you are more than safe to let readers be the judge.
2… Realize that you may have paid your storytelling dues in other areas besides fiction. Say if you have written a couple dozen plays and had a couple produced, your storytelling skills are probably pretty good. If you’ve been a reporter or worked nonfiction. Things like that. Lots of other areas transfer over into fiction writing. In that case you might be writing quality fiction right from the first hundred thousand words.
3… How much are you studying writing to become a better storyteller? If you only have three how-to-write books on your shelf and have never even listened to a professional writer speak at a conference, you may be way ahead of yourself in thinking of publishing.
Publishing and telling stories that readers want to read does take skill and craft and it takes some study to even learn the basics. For example, a couple of the writers who attended this last novel workshop brought first-written novels, and wow were they good. But the key is they had spent a lot of time writing other things and were avid learners, which is why they were here in the first place.
In other words, in short, what I am talking about is a learning period, and the learning must go hand-in-hand with the typing.
It’s called “practice” in any other art. In writing you need to practice as well.
But when in doubt, put the story up and let the readers decide. Writers are always the worst judges of their own work.
And readers who pay money always trump any other source of feedback.
So grow a backbone and trust your work and get it out there, either to a traditional publisher or electronically and POD published.
And, just because it is too good not to quote, here is Dean's advice to beginning writers:
1) Never stop writing and learning. Never think you know it all after a few sales. Never believe you are good enough. Learning in this business never, ever ends.
2) Get rid of the early words, the first hundred thousand words. Then after that keep your work for sale somewhere, either on editor’s desks in New York or self-published or both. You are like an artist with your work hanging in an art gallery or a musician working a small bar. You are practicing and earning from your skill as it grows. It might not be much at first, but if you keep learning and practicing, the sales and the money will come with time.
3) Don’t be in a hurry. This is an international business. You can’t get there overnight. Put your work out for sale one way or another and then focus on the next book. Never look back. Leave the book up and alone.
4) Grow a backbone. Believe in your own art without cutting off the learning. No writing is perfect and maybe a few people out there will think it works just fine and enjoy it. No book is perfect.
5) Never do anything that gets in the way of the writing. Stay away from stupid, time-wasting self-promotion beyond your own web site and social media, and just write the next story and the next book. In other words, be a writer, a person who writes.
6) And most of all, have fun. If you are not having fun while at the same time being scared to death, get off this roller coaster. The ride only gets more extreme and more fun the farther you go along the track.
I would encourage you to read the whole article, here's the link: New York Works as a Quality Filter.