I think that the animation will be much clearer with full detailing, it is hard to follow right now a bit. It looks like a back-kick, but there are a few things im not sure about.....
traditionally, back kicks are executed by the rear foot, not the leading, so the entire thing takes longer, forfeigting accuracy, power, and, more importantly, speed. Going stright in from idle with reverse footing makes the back-kick, already an obvious attack, even more obvious; its chance of success all but nothing. The chance of taking a hit straight to the face (or, if this is tae-kwon-do, where face-hits are not allowed, a hit to the stmoach) when you through your arms out wide before the hop.
suggested solution: start in ready stance (bounceshifting weight from foot to foot). Begin instead of a hop by switching from reversed to standard, a move which is highly ambiguous (it could be an advance, or most likely a setup for a roundhouse). This entices the enemy to guard their front left, and if they take the bait, they will find a full-force back-kick hitting them square in the liver. Here is a crappy animation showing top-down of what im trying to suggest:
without speed, stability, and fluidity, the kick would most likely be blocked or dodged, which is why i suggest ready stance, not idle, and changing footing instead of hopping.
the kick itself is great, although it might seem more realistic if the body was tipped to a near-horizontal level during it.
