Telling which syllables are stressed

[billy]

as has been shown many times, i'm shite when it comes to meter, but nonetheless i'll chip in.

given the right circumstance many words that are unstressed can be stressed depending on their intent
am i
could have the I as stressed
and through the heaving rains
could have through as stressed.
same as with
it's me i tell you

i think i'm right but can't be 100% sure about the fact