Painting flags of the world on my nails?

I want to paint the world flags on my nails, for some reason. I'm looking for popular easy ones. I'm gonna paint the union jack, japan, france, swiss flag, irish flag, scottish flag, i might have a go at the usa flag aswell, but it may be too tricky. Anyone know any flags of the world that wouldn't be too difficult to paint on my nails? thanks:)