Getting better but would like to see the following:
1) The circles, etc for the nebula effect are a bit distracting. Try and do something a bit more subtle
2) The darker blue in the outer circle is still too dark.
3) The "N" is still not sufficiently an "N"
Remember this needs to work on both a light and dark background (color variation is OK on each). I am not sure this works in its current form on a dark background