Looking good so far, I like the color scheme.
It looks pretty, but there are some technical problems for want of a better word.
Based on the graticule (the grid), the map is in Normal Equidistant Cylindrical Projection which means that:
The map should not extend pas 90° N or 90° S.
The higher latitudes should be stretched out horizontally producing an noticeable distortion.
A compass rose is inappropriate for this projection, and rhumb lines (the lines you have passing through the compass) would be curved, not strait.
I think what you want is to switch the Equidistant graticule for a Mercator one without changing the rest of the map. That would solve compass/rhumb line problem and mitigate the distortion problem. Or you could drop the graticule altogether and just have the rhumb lines.
Del, if you get curious about rhumb lines there's a fantastic thread from a few months back that goes into them in detail -- what they are, why they're useful, why Mercator's the only projection they work for. Here's a link to it.