I can't say that your accent is pure MERDA because Newgrounds will ban me for non-constructive criticism. I mean, it has the rights to.
So I think that I could say that your vocal cords need practice and moisture, in order to not make your voice sound like a cacophony to your beloved audience. I can suggest you to speak alone when you are in the bathroom releasing feces (preferably when you are having dysentery, so you can stay more on the toilet). Trust me, that helps me out clear my mind (and my voice) out of not so brilliant ideas and opinions, and always have a possibility to re-think my own thoughts.
Another thing is probably the lack of a script, which can be good for a short video, but you should remember that long monologues need to be consistent and concise, and having a script not only helps reaching these goals, but also keeps your mind focused on what you are actually saying.
Last thing: I, D-ray Kane Augustus III, find this cheerful 'Happy Christmas' video kind of unsettling considering the fact that I don't believe in either god or Jesus Christ. So I don't know how to properly answer to your kind (but also inconsistent) way for telling people to have a good time during the holidays.
EDIT: Whatever that means, you're wrong plebeian. My accent is pure Italian beauty.