I have looked at many exmaples of Rom com promotional posters and i have noticed one thing that stays the same across the board. And that is that the promotional posters tend to be able do what they want As long as it contains the main character/character's.
Here are two examples (i am mainly looking at teen rom com posters because thats what i am doing)
Another point that i have picked up on is that alot of the teen rom com posters that i have look at have a cartoony theme. I plan to use this idea on my poster. Also the posters always have the title of the film and in some cases a caption and in some other cases comments from critics or magazines.
My idea will use the cartoony idea as well as include an image of both the male and female leading characters. I am then going to use a title heading in a speech bubble so its similar to the title in my film (and this could hopefully become a house style for other promotional pieces for the film) and a made up comment from a newspaper.
The file is a A3 page size