Mise en scene:

set design is used in the “worst toilet in Scotland” scene, as the set is dirty, uses dark colours, this is to reflect how Renton’s life has been affected by drugs, as he no longer has standards

sound:

sound is used to show the character development of the characters, as at the start of the film mark Renton has a monologue about life being pointless, then at the end there is a much more light hearted monologue about life

cinematography:

in the opening tracking shots are used to follow renton as he runs away

editing:

in the intro, we see a montage showing rentons life, introducing him and his friends the montage shows how chaotic his life is, and towards the end how drugs have affected it, as he is in a worn down house.