the other marks don't inflect on your voice at all, just the acute accent.
You need to go over some basic grammar things with your professor. Ask him/her about the antecedent, the cedent & there's a third part of the word that I can't remember right now.
Depending on where the accent is, that is how you pronounce the rest of the word.
Most of what you said wasn't that bad, but there's some words you have problems with (longer words) and also things like "ou, oti, ouk, outo, auto," etc. Those you had some definite problems with.