Beth,
Thank you for your suggestions. But I think I am going to re-design and do the painting again, because something is fundamentally wrong with the painting and I am not very happy with it.
Chris,
Thank you so much for pointing out where I have failed to achieve totally. For the past month, I have been focusing on how to design my paintings, so that they will look 'effective'. But, as you said it is the most difficult thing to do well. I am trying to understand the fundamental principles and applying them to my paintings. Your sketch has helped to clarify a lot of things that I was in a muddle with.
As mentioned above, I will study and re-design my painting again, and hopefully, I will improve the next time round
Thanks again,
Mai