I had the *exact* same problem when I learned airflare!

The best advice I can give you is to do one, and learn how to stop it (with your legs in the air), then try to do one from here. The seccon one wil now get very ugly, because it is harder to swing the legs from here, but you will also get use to doing two, so after a while it comes natural to keep going..
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sushi-one