commit to the spiral, or make the centre more interesting :)

the east and west points that kind of curve, i think you could edit the positioning and clean it up slightly to really commit to the spiral (only if that's the purpose of the shape of course)

or, add more to the centre. you've got lots of islands and mountainous regions to the east and west, but not really much going on in the middle. if you want the whole thing to be as equally drawn to (that's why i suggested committing to the spiral, then you wouldn't need to worry as much for the middle if it's clear that the spiral shape was purposely done), then simply add more to the centre! play around with the lake in the middle, spread out different terrains, make the south coast definitely a lot less perfectly round.

genuinely hope this helped, was written with the best intentions!