Most people know Cummings as the guy who got really creative with capitalization. If you see a poem that's almost all in lower case, chances are you're looking at something by our buddy E.E., or you're looking at somebody who's coppin' off his style. The poem "my father moved through dooms of love" is definitely a good example of this, with almost the entire thing being free from the tyranny of forced capitalization. When Cummings does choose to capitalize something, the dude really means it, and whatever he's talking about has an emphasis that it just wouldn't otherwise. For example, when the speaker describes his Father as "Scorning the Pomp of must and shall," we can feel the father's contempt in a very real way (33).
Cummings is also famous for his funky syntax. He had tons of fun warping words into his own weird world. He said "whatevs" to typical logic and made up a logic all of his own, which reinvented what words can do. Some cool examples from this poem are when he transforms the months of September and October from nouns to adjectives with a flick of his magic... um... typewriter. We read cool stuff like "septembering arms" (37) and "octobering flame" (41), and suddenly the qualities of these autumnal months are used to describe something else. And we're like, "Aw, man, we didn't know words could do that." In a Cummings poem, however, anything is possible. Just check out "in Just-" or "[i carry your heart with me (i carry it in]" for more examples.