Some quick considerations about plates
- You have 2 kinds of plates, continental (less dense) and oceanic (more dense)
- Plates can rotate, translate and deform (Larger plates are less likely to rotate than smaller ones)
- When two plates collide the outcome depends (amongst many other things) on their density. More dense plates will subdue under the less dense ones forming a trench and a mountain range.
- A plate colliding on one side is probably creating crust on the other side.
I see some problems:
You have an oceanic plate that's moving towards all directions. Plates can really dilate, but usually not a big plate such as that one, and not enough to be relevant here.
You lack the small plates, that usually are formed after the fragmentation of bigger plates. Look for the pointy edges of the large plates and fragment those off, as that's usually what would have happened.
Your plates are moving really antagonistically everywhere, that's probably not impossible, but most uncommon. You continent will be riddled with earthquakes, tsunamis and volcanoes. Usually there's a lot of plates frictioning laterally.
Take earth's plates as an example:
And this are possible plate interaction outputs:
File:Tectonic plate boundaries.png - Wikipedia, the free encyclopedia