Hey Astral, firstly welcome to the org!
Making an opening run is indeed difficult, you can't just simply make up any opener, it has to be planned and experimented beforehand. The reason for is so complicated that I don't know how to put it into words. But after lots of practice and experience, you will be able to judge whether an opener is good or not.
About the run, if you could make a replay and show us, I could give you some advice and tell you what you're doing wrong. Try running as far as you can. Then upload the replay to
www.speedyshare.com and share the download link here so I can see it