Easiest way to install bonnet vent and bracket

Hi all, I have a '73 Jaguar e-type series 3 v12 convertible, and need help with the easiest way to install the bonnet vent and bracket. If anyone can give me instructions on the best and easiest way to install these parts, I would be eternally grateful! Many thanks!

Welcome Bud,. Not sure what you mean. Maybe a pic?