Indeed, all plate movement is rotation. Particularly with the center of the planet as the reference - however, a lot of the movement seems translational if projected on the surface as if it was a flat surface.

Corvus, I think you are still a few iterations from finished and I would use Hai-Etlik advice of getting a spherical object to project your continent into. I know some oranges got stared at a lot when I was trying to envisage the tectonics for my con-planet.

Or, if oranges / polystyrene balls aren't readily available, download the program G.projector and upload your map into it, to get a grasp of how your drawings fit a globe. You'll be amazed at some results (especially a look at any of the poles directly from above - that's orthogonal projection). Try it