It looks generally good, but if you want to make it even better, then you might want to change the color of the ground to match the trees better. As in, give it a tone closer to yellow shades. As it is now, the colors don't go that well together because the ground seems in a way too lush, while the colors of the mountains and trees would support more the colors of autumn.
Yeah, I wanted to do something more akin to that, but I'm about out of room on the chipset I'm using. I could just make the northern continent another whole map, but I'd rather keep it all on a single map. But I do think you're right, so I'll figure something out. Either I'll sacrifice some more room on my chipset or I'll just give in and make a separate map all together.