What am I doing wrong?

Couple of things,

1. Your shot looks a bit pale, not much crema that the milk can stay under before pouring the art.
2. Try to pour a bit of milk from a distance so the milk gets under the crema, then mix with a spoon the coffee and milk.
3. You NEED to be in the CENTER of your cup !!!
4. Pouring too fast creates a big white cloud, you need to find the right pace.
5. Don't wiggle until you see white on top of you coffee.
6. Texture of the milk is really important.

Here's a good video that helped me a lot when I started doing latte art, hope it helps :

https://www.youtube.com/watch?v=g7E0zWZjhhw

I would pour more in the middle and closer. That will mix everything up nicely so the crema is not as important. You can even practice with hot coco instead.