It's a bit tough to talk about particular places on the map with no labels to refer to things, so hopefully this makes sense. On your tectonics map, you have a lot of island arcs, but they don't seem to line up with the types of plate boundaries they're on. For example, between the two western continents, you have a major island arc, but the plate boundary there is divergent. Meanwhile, the two oceanic plates in the center ocean seem to be converging near the equator, but there is no island arc there. That's basically backwards from how you'd find it in the real world. I'd advise going through your tectonics map and carefully marking which boundaries are divergent vs convergent vs transform. That will make it easier to see where there should be mountain-building on land and island arcs in the ocean (convergent), and where there shouldn't (divergent or transform).