Replying to Flatspin advice and clips

ok so jon has the best flatspins i think, but theyre so not hucked i cant even watch his rotation.

i found this clip which seems to be a pretty good flat 5

http://www.youtube.com/watch?v=KZ44dZu_xO4

but tomorrow is going to be sunny and im gonna try to learn them. Any advice / what not to do. im pretty comfortable with it i think. ive had backflips and 5s for years. shoot.
oh and if u have a clip of you doing one in your NS videos say so, so i can scope it. gracias