A bit cumbersome in the turn, which is supposed to be fluid and fast, and why I have always spun on the ball of my leading foot, as this leads to less of a telegraphing move. When I started TKD, I focused heavily on the basic kicks, before progressing to the spinning ones, and eventually breaking those down step by step... then in slo-mo, then built up the speed.. but never flinging the arms around (another telegraphing move), but keeping them tucked in tight to the body in the 'defence ready' position, for when you have spun around.