Looks pretty good.
I'm a bit concerned though, that the war zone might be a bit too tight for the small map... not sure if all the army numbers will be able to fit in the small version.
You are using space a bit wastefully, though. Hence I have a suggestion, which you might not entirely like... since it will be extra work for you. But anyway...
What I suggest is "zooming in" to the land area a bit more. Currently, you are not using the maximum dimensions... so it's easy to zoom in, and that small group of tiny islands in the south tip can be left out, since it serves no gameplay purpose... This will enable you to zoom in more to the land, by cropping the image so that the playable land area reaches to the edges of the image.