A little bit of progress; painted the coasts and rivers blue, and erased the sketch and help lines.
Click image for larger version. 

Name:	Antillia3.jpg 
Views:	139 
Size:	375.8 KB 
ID:	60667

Now I have an internal conflict… Administrative areas in different colors, like a normal political map, or everything in natural colors? The first would make it more authentic and period-apropriate, the second would be more… well, more me, but it might look too uniform considering there are no deserts or arctic areas to break up all the green. On the other hand, I plan to add cities and roads in muted red, which would give it some attention-focusing points. As I'm typing this I'm leaning more and more towards natural colors, actually…