I agree with the others,,,, time to put it on the gun
At your point C question. That line needs to be curved a bit, just like on your drawing. The end of the line needs to point toward point D.
The lower leaf in the drawing looks fine,,,,, the carved one has a hump instead of a smoth flow. Do the carving more like you've drawn it, and it'll look fine!
Now Go for it!
John