Here's my contour drawing of the jar. I have a few indications of highlights and apricot preserves, but would rather save the rest of the shapes and use the watercolor wash for some soft, diffused edges.
No preliminary pencil lines were used on the jar. I just started at the lower right edge of the jar with my Micron #.01 pen on Arches 140# CP watercolor paper. Size 8x10"