Thank you! I didn't realize maps/world creation fell into cartography until just the other day, but I tell you what I'm so happy to have found this place!
I'll definitely have a dig around the tutorials section for mountains and anything else.
You actually got the breaking apart bit right on the money, it is meant to be a younger planet, there is still quite a bit of movement. Cheers for that being able to be seen. I see there is also a crits/WIP thread, awesome!