Once you have your g edited more or less the way you want it, open the Line Gallery (on the top right portion of the Infobar). Highlight the Set Line Width amount and change the width to 32pt. Press Enter to apply the changes.

From the Set Join Type drop down list, select Round Join. From the Set Line Cap drop down list, select Round Cap. Round Join effects cusp joined areas while Round Cap effects the ends of the path.

Select the line. Open the Color Editor (Ctrl e). From the drop down list Choose Color to Edit, select Local Line Color. Select RGB Color Model from the drop down list of Color Models. Enter the three RGB values for the darkest green.

Make a clone (Ctrl k). Highlight the line Width on the Infobar and change the width to 20pt. Press Enter to apply the change. Color this line with the middle green color. Make one more clone, change the line width to 8pt and change the outline color to the brightest shade of green.

Save your drawing and take a short eye break.