Quite liked the performance. On first watch, it reminded me of maybe a more memorable version of her TEOG American Idol performance, but I think this belongs in a separate category from that.
She needs to find a way to not drone the "m-m-m-marry" parts, though. It just sounds like she's mumbling. Maybe they can layer her vocals with a backing track there.
The choreography looked really

when she was on the moon, but it got better when she went down to the stage.