Watch the Comfortable Textures online guitar lesson by Angus Clark from Play in the Style of David Gilmour
Playing a minor triad across the top three strings is the flavor of the day on this example. When performing a part like this one, you have to be just as concerned with the sonics or sound as you are with the pitch and rhythm. You are part of creating a space for the listener and any wrong move can ruin it.
Here again, the music is fragile and you need to be familiar with what the effect of your pick attack, glissando, and vibrato will be before you execute. The only way to learn this is by experimenting with the tools at your disposal. In this context, reverb and delay are absolute essentials and should not be underestimated.