The map looks nice, but the highland in the southeast is unrealistic.
Did you use Fractal Terrains or any other fractal map generator?
If you want to create a conworld with Earthlike geology (plate tectonics), I suggest not to use fractal map generators, but rather make a map by yourself.
Yes, I know about the problem with fractal terrain, but in this case, the result matched what I wanted (of course I modified it a bit, but just a bit).
It is a supercontinent born from the gathering of three smaller continents. The central area is the remnant of a sea - basically a large salt desert.
The south-eastern highland is not the result of plate tectonics but of a large volcanic episode 5 millions years ago caused by an impact event at the antipodal point. Of course this basically exterminated everything above the size of a cockroach (humans came later). The area is still volcanically active.
Did I mention this world is a lovely place with a balmy climate and a diverse wild life ?