Very nice map, though I tend to agree with Daelin's comments above. Some other things to consider are adding a border and a compass to give it a 'finished' look. I'd also do a little work on the rings around the coast and in the lakes, as they're very 'digital' and a little pixellated at the moment.

I hope you'll share the 'aged' version with us too, as I'd love to see that!