I would imagine if a casual MMA saw this they would be fooled into thinking it was an official promo (except for the end where you credit yourself obviously).

The only bit I would say needs a slight a adjustment is a few seconds into the promo (0:08) it just sounds slightly too obvious that you’ve spliced audio together from Goldberg & Rogan saying the fighters names during fights/walk outs. Perhaps it might have been better to use audio of Buffer in this scene as he says fighter names with exactly the same inflection each time.

Also there seemed to be a slight problem with the framerate when the promo cuts between fight highlights, but I have no idea if this is problem with the original file or just youtube, I don’t know I’m not a filmmaker.

Anyway, very minor criticisms, but great promo, keep it up. Maybe for the next card you could perhaps create a promo with a slightly different feel to it? One with a more subdued feel than the standard UFC ‘epic’ feel (Maybe Boards of Canada or something similar might be appropriate music?). Anyway, as I said before, just minor things I thought might help, great work.