In my essay I have wrote the ideas in 4 sections :
A short introduction to explain similarities and differences about the subject you are writing about.
The second paragraph is about the similarities i.e. Both countries are …. As …. There should be 3 or 4 similarities at least
The third paragraph is about differences. there should be at least 3 or 4. I.e. the biggest difference … anther deference is ….
(However you can swap the second & third paragraph)
Finally conclusion with my opinion about where I would like to live or which country I prefer. I did expresses my ideas and opinion to make the reason clear for the reader.