"I've held onto little musical sketches that I thought could be useful, and the more time that I spend doing them for each film, then the more I have to draw on"

Mike Figgis is describing his innovative procedure as a film director. He has a practice of collecting musical sketches, which are brief pieces of music that he creates, and keeping them away for future use. He believes that the more time he spends producing these sketches, the more he has to draw on when it comes to making a movie. This suggests that he values the creative process of developing music and believes that it can be useful to his work as a director. He is also suggesting that the more time he spends creating music, the more concepts he needs to draw on when it comes to making a film. This suggests that he thinks that music can be an effective tool in the creative process of filmmaking. By collecting and saving these musical sketches, he is able to draw on them when he requires inspiration or ideas for his films.