Welcome to IFI Carl, another Banana Bender!!
You are off to a good, and inventive, start but have a look at the Getting Started articles off the front page then get into the Blueprints. That should keep you occupied for the next few weeks then practice, practice, practice.
What type of charcoal are you using, not BBQ stuff I hope. Either make your own charcoal or try to get some coal for a better result.
Cheers