Not bad for your first map. I'll try to point out some areas that need work in my review, so your next map will be even better.
Playability: 3
The map plays fine, but it just too easy! For all the archers and horsemen you have given the defenders, you really needed some massive invasions to make it a challenge.
Balance: 3
Overbalanced for the defenders. Simple solution: either cut out the "outlaws from the woods" or leave them, and scheduleabout five times the invaders, with catapults and seige towers.
Creativity: 3
Castle design was ok, but nothing special. Needs some work. Also, the messages are too many and not right for the scenario you are going for.
Map Design: 2
Needs work. Less usage of broad strokes with stones and marsh, and add some terrain shifts and some vegetation to flesh out a more realistic setting.
Story/Instructions: 1
Needs a minimap, a strong description page with a storyline, and a much more detailed in map story.
Overall, just need to refine your craft, and download a few of the top rated adventures to gather some tricks of the trade and some tips for bettermap making..