Thanks for your comment !

By Viking
the landmasses are a little too similar in size and shape
Ah? I'm a bit surprised. I agree for the similar sizes, but for the shapes, I didn't have that feeling. Anyway, the fantasy setting is done since too much time for a change...

By Viking
I am not sure how you accomplished the elevation
I've walked a strange path to get those mountains... It's the result of a test. On my old map, I did the mountains with wilbur (not the usual way to my mind). So I took them and apply an effect in Inkscape ("liquid drawing") cause I wanted something more like "level lines" (the setting is not easy to date, but the closest is "victorian").
The result was this but with a lot of "noise" in the plains and and almost flat lands... So I cleaned it up to get something close to my purpose.

I'm gonna see if I can do something to get something less "abrupt" and with a more "natural feeling" as you said.