Owl That's pretty good actually! I'm gonna use that! The wall walk would require a lot of strength though... I learnt the opposite way, by just kicking up onto the wall like the girl in the fail .gif.
I'm not too keen on the banana shape they're doing, maybe that's an acrobatic or gymnastic way of doing things. It seems like the feet are counter balancing, and consequently the spine is bending too much.
I find it feels weightless when you're arrow straight, with your vertebrae, hips and feet stacked on the same plane. You need to push away from the floor, actively extend your spine and lengthen all the way through your legs to your toes. It needs to feel like you're extending through your whole body, not collapsing.
Also, core strength is key. It's not your shoulders that do the work, it's your psoas that controls balance and micro weight adjustments. If you want to nail handstands, work your core... Lots.
