Spray Painting

With great trepidation I cast out my question to the group. I have been gifted an airbrush kit complete which is very tuneful. I am about to build the Renault R17 tank from GPM, but convert it to the US/Canadian version. That means the hull colour needs to change. I've seen on the Czech site that someone sprayed a kit but no discussion on what or how. I have an idea but don't want to bugger it up.

So, has anyone airbrushed a paper kit and is willing to provide guidance. I realize that practice, not on the kit is necessary first, but it is the second part....Thanks in advance folks.