I really like the overall feeling to the pen drawn map. I have a special place in my heart for these styles.

I have to say however that the messy stuff (I think it is the swamp) looks very out of place compared to the rest of the map. I think you would be much better off drawing clumps of grass (the 3 blades of grass that that meet in the middle) and maybe some cat tail images to represent the swamps. Again - do it will the same tool you used to draw the other parts of the map - keep it consistent.

I will be watching very closely to see what you come up with. Fix it up - you have time.