Entry #3: the K is not the same height as the other letters. Also, play with some other colors. or even just the color of the sideways gem. why did you choose gold? It would be nice it you could use a prism color.
Look here and half way down you see the vivid diamond:
http://www.diamondcuttersintl.com/the-vivid-white-diamond/Entry #8: Let's see how it looks with "Design" on the top of the diamond - any maybe play with colors.