Nice work!
Traditionally, kwaikens often served in a defensive role. Although unlikely to be used for this purpose today, with this handle shape there is alot of room for slippage if the handle was wet.
For this reason, some makers use ito wrap which affords the hand a natural secure purchase. Others use a single finger groove towards the heel of the knife that enhances grip stability.
That said, your design is cosmetically flawless. The grind of the knife looks perfect and the aesthetics are top quality.