Well I've got to be honest, for your first time doing that, job well done. Those little nuisances that detail infatuated
@Rain Cold mentioned will come with time (he's like that Bahahaha) j/k RC
Seriously, I've done many presentations over the years (not in front of cameras like that, which I think would be more difficult) and I've seen many people struggle far worse than you on their first try. You looked pretty natural and it will definitely get better the more comfortable you get.
Your voice projection was better than I would have imagined haha and only thing I'd add to that is try not to let it fade out at end of sentences (you did that a few times and difficult for us old folks to hear). Oh and your tie was too short ?
Good job Nick