Please could you do the following to the image which I will be emailing you:
1-Delete the unnecessary lines. They are crossed by purple. Sorry if the purple is not as clear as the red, my kids have misplaced the red pen :(
2-Vectorise the image. Turn the hand drawn lines into smooth lines and modify the shapes to make them well balanced.
3-Reflect the image to make a full image.
4-Also provide a vector version of half the image without the vertical line.
5-Ignore and delete the grey line.
6-Reduce the nodes as much as possible without compromising the curves.
7-Turn the dodgy looking semicircles to the left of the image into proper semi-circles for the half image and proper circles in the full version :)
Please let me know if you have any queries.
Thanks and regards,