Nice work so far Ilanthar! I am sure finishing this old project will feel great
I generally quite like the direction you are going with this. My only complaint might be that some of the landmasses are a little too similar in size and shape. The colouration is pretty good!
I am not sure how you accomplished the elevation but if I might suggest something regarding it I would say that you should consider having more areas are that not just mountains and have wider areas of medium elevation and make some of your ranges not be all equally high. Currently is feels like your landmass is either close to sea level or is a mountain though I see you do have some hills. Some land masses in the real world slope gently over long distances. Check out these cross sections of different landmasses. Obviously they are exaggerated for readability but you can see what I mean I hope
Otherwise, keep up the good work!