I designed this map for a Star Wars RPG session, but there isn't too much about it which is distinctive to Star Wars. I built it from elements gathered from this site, RPGmapshare, the WotC custom maps forums, the Holocron, and some other sites.

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Name:	Swamp Building 3E.jpg 
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I am looking for some feedback on the map. Particularly, how do I get rid of the blockyness of the map? [Yes, I know blockyness isn't a word.] The map looks very "square" to me and I was wondering if I'm just seeing things or if there is some way to fix it. In addition, is there a better way to do the transitions between water and land? Of course, all other comments are welcome as well.