David, I'm sorry about what happened I mean, in as far as getting constructive feedback on this forum is concerned. I'm partly to blame for that but I can make up for it, right here, right now.
Well to begin with, most screenwriters submit their work to script competitions not to win but to get exposure because at times the top three scripts get read by people who count, in the industry that is, an agent probably. So it's possible more experienced writers submit their work and as this was your first script it's easy to notice the difference. That done, I'd like to let you know that if your work is copyrighted, I can offer a critique off-site. It might be helpful for the re-write because editing alone won't be enough. All the parts of a script must work for one purpose so format alone either isn't enough.
One thing I noticed is the script isn't written in standard spec format. In a spec script, you write only what happens in the script. No titles, credits etc. I'm more into film scripts than tv scripts but I'm sure there are distinct similarities. But as for your fear that your ideas can be stolen, well, sometimes you have to take the risk because if you keep a script in a file and probably hand it friends to offer a critique they'll only say nice stuff about it but when you submit it....
All the best anyway.