To bring the hoop from your waist to your neck, you have to do what is called a shimmy. What you're going to do is you're going to work your arms inside the hoop and wiggle the hoop up to your neck.
The technique for this is mostly in the timing. You've got the hoop going around your waist. Notice when it's in front of you, when it's touching your belly, when it's making a space, a loop so to speak, in front of you, and you can notice that timing by counting, you can say front, front, front, front, front, and try just sticking your arm in every time that it comes around, try it with the left, try it with the right.
Then I would suggest starting with one arm at a time, try sticking the arm in and continuing to hoop with the arm inside against your side. Stick the arm in when it's in your front, and keep it glued to your side. Notice how this automatically makes my shoulder start moving in order to keep the hoop going. Try the other hand, notice when it's making a space, it's sticking in, try to keep it going, hoop starts to wiggle up right away.
Okay, so when we start to stick both arms in, what we're going to do is stick your arms in, glue them to your sides, and wiggle your shoulder so that the hoop will start to walk its way up to your neck, so it looks like this, okay? Let's try that with the hoop. Sticking one arm in, both arms in, wiggle it up, and then you got it going around your neck.
Let's try that again. Hooping around your waist, one arm, both arms, wiggle it up, and we're neck hooping. So that's your hula hoop shimmy. Do it a couple more times, a little faster. That is how we do our hula hoop shimmy.