I was sooo excited when I found this video a few days ago because this is the first time I've seen another one-armed girl playing guitar! And she's sooo good! This just goes to show that if you really want to do something, you just need to put in the work and do it. A disability is not the end of the world nor is it a deterrent to your dreams.
On another note, I really want a guitar prosthetic like hers. It's way cooler than duct-taping a pick to your little arm.