Anyone an expert on screamo?

So, I'm in a band and we're covering "Blood On My Hands" by The Used. I have to do the screaming part, but I can't get it right; I can't get it to sound right. I can usually scream fine in the other songs, but this one I just can't.

Anyone know how I can do it right? Sorry, I'd post the video with it, but my computer won't load it.