This map is not playable at all. What you did is made copied a Stronghold 1 map into Crusader and made the size bigger. Then you added some little details. But the thing you should do is submit a map that everyone CAN play in Crusader. Simply because no one can launch this map, or play this map. It doesn't appear in the PLAY section of the Custom Scenarios. Make an invasion your following map.
Since this map is not playable there is no balance at all.
Correct me if I am wrong, but it looks like you have putted someone elses map into Crusader and made the size bigger. This is somewhat a waste of time. Just make your own maps. Also try to give some personal touches to the map.
Map Design: 2
When I open up the edtior the map breaths little atmosphere in the centre where the castle is. Still some ugly points stand out. Most of the map is plain. Try using different kind of ground types. Map design isn't something you can put up in 1 hour. It takes days, sometimes weeks. Try to use some eyecandy next time you design a castle.
You didn't have any story at all, only the scentence that this was a Siege map. Try making your own story next time. This shows the effort in the map.
Although this is a Siege map, it cannot be played, and the map design is mostly lacking. By using a map already used, the creativity very low. Just take these tips: Make an invasion next time, and work long on your balance, map design and story. This takes a lot of time but it is defenitely worth it when it finally works. Hope this helps you out.