Note: Only read others' responses after I wrote this so there's a bit of an overlap =S
To start, your introduction needs work. Normally I'd clearly state out each of my main points, and whilst you've identified your contention, I don't really see where you're heading in support of that. I don't mean in terms of actual evidence (no evidence should be in the introduction), but actual key ideas relating to how LBW 'shows that despite life’s trials, happiness is possible'. You could group these in terms of cinematic elements such as narrative and various cinematic techniques which Watts uses to express such an idea.
On the other hand, you could also try grouping in terms of smaller ideas which compound to express the topic idea such as stuff like 'By suggesting that the resolution of life's trials can actually be a source of happiness for one self, Look Both Ways indicates that happiness is indeed possible despite such trials' (Note, I didn't do this text so I'm just making crap up here).
Your first paragraph lacks a topic sentence and jumps immediately into evidence. This isn't good as the examiner doesn't exactly know where you're heading and what this evidence is trying to prove yet. Always have your first sentence as a general topic sentence which outlines the point you're trying to make. Second sentence, be consistent with your tenses and stay in present typically. Examiners will be looking for this. I assume you haven't finished this paragraph, but I actually have NO idea where you're heading even after that many sentences. I'd say the lack of a topic sentence is the main fault but another problem is the lack of sentences which help explain and relate the evidence to the general point you're trying to make. All you have right now is a chain of evidence, and unless the examiner knows the point it relates to, it's pretty much worthless.