>>2032414Lines are a simple path made using strokes:
1. Since the line is very simple, I place all the points of the line.
2. I draw the handles to make the proper curve of the line, making sure to keep them parallel.
3. Fill the path with the desired color and turn the stroke color to transparent.
For more complicated lines, I usually do the following:
1. Draw the line with one stroke.
2. Duplicate the stroke.
3. Move each node of the duplicate an appropriate distance to where I want.
4. Adjust the handles to make the line more consistent in width.
5. Join the two strokes and fill in the color.