you really should work on just helicopters, thats the best way to learn a spin. spin with your arms out and your body straight so you look like a T. stay forward in your boot, steady shin pressure, and when you spin dont look at the ground, look at the horizon until you spot the landing...your body will follow your eyes; this will get you comfortable in the air, then you start adding grabs in. dont be adding grabs if you cant even do the spin!