> I made one for my 12 year old daughter (canoe).

> For the blade, I scaled down (on AutoCAD) the shape from an
> "adult" paddle. As for length, there are length formulas for
> canoe paddles. Someone else may have to help on kayak paddles.

I just built a greenland style paddle for my 7 yr old son but the length form. should be the same with any type paddle. have the child strech her arms out measure for finger tip to tip then add form finger tip to elbow and you have the length for that child