Functinal air vents

I was thinking of adding functioning air vents to the hood of my fiesta, anybody on here have any tips or experience putting them in?

You can reference the pro rally Fiesta’s for the best location for ducted vents on the hood. These pieces are available from several different online retailers. They aren’t particularly cheap but they make the process much simpler than what I went through to create a functional ducted hood panel in 2012.
However, you will be cutting holes in your hood and then you will have to Finnish it by painting and clear coating to have it look acceptable and not like the butchery it basically is. Which is butchering with a good purpose.