the one bending too much needs to bend more in the outers,,
the stiff one needs to overall bend more,, please take with grain of salt,,
if you use an app..its like projecting an image onto paper and tracing it,,,, your eye wont learn,,
just take the time to develope and eye for tiller,, yes its hard ,,
sometimes a stave has reflex and deflex in the limb,, so a straight arc,, is not stressing the wood evenly
just keep posting and asking you will get it,,