What are some guitar techniques that tradional post punk guitarists (ex. Bernard Sumner, Johnny Marr) use?

I am a pretty decent guitarist- but I'm looking into honing in on specific techniques, especially in the traditional new wavey sound that was prevalent in a lot of early goth and post punk in the late 70s and early 80s.

I have the tone down (mostly), but I feel because I'm used to playing a lot of psychedelic type music my technique isn't exactly on par with that of the guitarists of the time.