In my book I don't talk at all about themes. This is because I reckon they're bullshit. Writers don't think "oooooh what themes am I going to throw in my magnum opus today? Let's start with a slathering of human condition, followed by some darkness of man's heart and a genuflection on the perennial state of alienation." No, they think "if I kill this guy, how will the other guy react?" or "what if the villain ends up doing good deeds on the side?" Questions of narrative, structure, language - all the things your techniques refer to.Thanks for the replies so far, everyone.
Basically, what I mean is, all the how-to guides go on about the importance of developing a thesis behind the concept, eg, Belonging, and then discussing techniques and effects. No mention of themes.by themes, I am talking mostly about issues that are prevalent to the texts, eg isolation, identity etc..., eg you might talk about the thesis, then underlying themes that convey the thesis, then techniques, effects etc...