I left this comment for you on you tube :
I love the invert on the launch of the second attempt! Since you said you're just learning, I'm pretty sure it wasn't on purpose, but still impressive! Try reducing your throws a bit, at least until you start to get a feel for the sticks. And throttle down some once you get off the ground. The Nutball flies really well just a little nose high and slow, depending on your power system, probably around half throttle or less...Keep at it. It will come sooner than you think!
Let us know if we can help in any way as well...