>>1662031One trick I use on long curves that I just can't seem to ever get right is to :
Draw the lines somewhat close to the image with minimal nodes.
Turn on stroke and set it so that both sides add up to the width of the line you want.
Adjust the lines until they match up.
if that line does not match a bump in the original I will turn off the image and see if the bump
is really necessary, if it is I can add nodes and adjust them.
Image loosely showing what I am talking about.