The map as a whole seems fine, it's clear and shows what you want to show. BUT: the distortion on the sea text is a bit much - I don't think it really adds much to the map while at the same time grabbing attention and shouting, "Look at me! Look at me!" to the detriment of the rest of the map.

Another thing - you have a Western and Eastern Vale. A vale is, basically, a valley - not usually a feature associated with seas.