Help with tectonics

[Steel General]

I can't help you with the tectonics (I largely ignore them on my maps), but you have the makings of a nice map here, some great land shapes to start with.

[Karro]

Having trod the tectonics road before, in my own map, I think that generally yours currently looks pretty good. Projection-wise, though, it looks a bit odd. You've got a squarish sort of map projection here, which means if this were to be put in a standard Mercator-ish projection (2-to-1 aspect ratio) this would experience a lot of stretching. Either that or the plates along the west and east edges have a lot of empty material missing.

So, if you continue down this road, I'd take that into consideration. Additionally, I'd take into consideration now (before it grows too late to change and comes to bother you later) that your continental shapes will be subject to some polar distortion at the north and south poles. In other words, if you map this to a sphere, you'll get some very odd-looking warping at the north and south. I'm not expert here (my own map fails miserably at the poles, so I speak from that experience) on how to fix that, but there are some threads on some ways to get some accurate, and aesthetically pleasing, polar distortion, so it might be a good idea to do that now, while in the black-and-white stages if you think that might be important later on.