How do I release a curling iron?

I used to curl my hair, and it worked fine....but now, when i do it it looks badly crimped or something.



i think im doing something wrong with the release of the clamp thingy that holds down your hair. do i release it as i uncurl the hair peice, or do i let go first, and then uncurl, or do i release gradually....or what? please help me.How do I release a curling iron?
twirl it (sortove unwrap it) in the opposite direction you put it, then let go!! just unwind it!!=)