Ian, great first attempt. You basically made a Trangia; cool! Pressurized side burners are the most complicated; they operate similar to the last three stages of a turbine engine, which my professors explained are "suck, squeeze, bang, blow". Those are not abbreviated instructions for a hot date, but rather the intake, compression, ignition, and exhaust stages, which occur continuously. Side burners can be closed off entirely because combustion occurs externally, after compression.
Its a fascinating hobby with very low overhead costs; soon I predict you will have a shoe box full of stoves; like many of us do..