Great video. As you stated this is your first one so I will be easy on you. Here are some suggestions and you are probably aware of them but lets air them out.
Black shirt on black background with pale skin creates a ghostly effect. If this was last week I would have swore you were going for a Halloween theme.
Make it fill the video screen. It seems like you recorded at a lower resolution than you uploaded it as? Not sure on this as I don’t have any knowledge in this area.
Anyhow congrats on your first video. Actually would love to see maybe a video of lessons learned during your creation of this first video.