You've already taken that first big step by actually videoing yourself!
You can now learn from yourself and teach yourself from your recordings. You've seen how your hand looks awkward and you look down too much, both easily correctable things. Get that camera on now and dance, concentrating on looking anywhere but at the floor and thinking about a graceful arm, one that is an extension of the move or walk or twirl that you're doing. After only one more recording you will already see improvement, even if it's only 5 seconds of looking ahead, smiling, with a beautiful arm!
This is the place to post your worst videos when you're feeling rubbish about dancing, because where you see awkwardness and repetition, we will see fabulous flexibility, a transition we want to steal, an entry or exit that looked amazing, or even a pair of shoes, outfit or body that is HOT.
Take a deep breath and post your video now, and then get up and dance your socks off concentrating on one thing you want to change, watch and revise. Then post your improvement so we can all cheer and share in your glee :)
If you're still unsure, just edit out the bits you really don't like and post the good bits ;)
Do keep the whole video for just you though, it really is useful to look back on and to use to help you improve. My pc is full of vids that I look at and think OMG, how stupid do I look - generally when i'm trying really hard to be sexy or to do damn body rolls that are the bane of my life.
Hope this helps to inspire you a little bit. Make the post and feel the buzz :D
