Thesis about Dark imagery in Romeo & Juliet - feedback

Im doing an essay on how dark imagery helps out their relationship throughout the play. Hope you guys could give me some suggestions. Thanks! =)

- Light and dark imagery permeate everyday life. In Shakespeare's Romeo and Juliet, light and dark imagery plays a prevalent role in Romeo and Juliet's relationship. Dark imagery facilitates the lovers' relationship allowing them to be together even though they are on opposing families. This may be illustrated by an examination of their actions, speeches, and attitude

Plural: Light and dark, two kinds of imagery----> Light and dark imagery permeate everyday life.-- correct
In Shakespeare's Romeo and Juliet, light and dark imagery plays ---- incorrect
In Shakespeare's Romeo and Juliet, light and dark imagery plays play

In Shakespeare's Romeo and Juliet, light and dark imagery play prevalent roles in ...

Complete paragraph 1 by writing something about the RELATIONSHIP between these two or how they compare/contrast with one another. Give a clear thesis sentence.

This is how to start paragraph 2:
Dark imagery facilitates the lovers' relationship allowing them to be together even though they are on opposing families. This may be illustrated by an examination of their actions, speeches, and attitude

Start paragraph 3 with an equally excellent topic sentence about light.

Start paragraph 4 with some excellent observation about the 2 in relationship to one another.

Write a conclusion that reflects on your thesis sentence.