All of the instructions for contributing from the main repository apply, and won't be repeated here. You simply need to change references to caskroom/homebrew-cask (that repository) to caskroom/homebrew-drivers (this repository).
All of the instructions for contributing from the main repository apply, and won't be repeated here. You simply need to change references to caskroom/homebrew-cask (that repository) to caskroom/homebrew-drivers (this repository).