editing- at the start of the film they type out all of their names on the screen to show what type of people they are and why their names are like that, showing a little bit into their lives. when they show sick boys introduction it is him throwing some sort of tantrum to show that he is an angry hot-headed character and that he is a bit more snappy than the others.

mise-en scene- the best use of mise-en scene in this movie is when spud is in a job interview. there is nothing interesting in the background so we can fully put our attention on spud to see how he is acting on these drugs. using POV shots so we can just understand how crazy and out of pocket spud is acting.

cinematography- when Renton had his overdose and when he had his withdrawals he is showing a lot of close up shots and a lot more on his level. this allows the audience to really understand how he was feeling in this huge moment of weakness.

sound- sound is used a lot during this movie to set the mood and so we know what part of the movie we are on, like the same song is played throughout to show that they are in a good mood and something bad will end up happening after the part of the song finishes.