try to send it more upwards and allow your legs to swing around your shoulder, it looks like you are almost throwing it down. when you figure it out you will know you're doing it right because it will feel a lot more floaty.
It wasn't terrible, and yeah its a flat spin. Try and grab japan for sure, it will make it look better and more like a flatspin. It can be so tricky to figure out what you are throwing on the tramp sometimes haha
You don't need to set it with your head or arms. Just jump as high as you can and push right with your feet on the takeoff, you legs will naturally swing to the left.