Thank you for the quick response, Hai-Etlik. I have changed the texture to get a less-woven effect.

Since I'd like this map to be relatively detailed without a lot of open space, I want different terrain to be represented with different symbols (forest, lowlands, etc). I'm now trying out some different tree patterns, some with color, others without. Here's one option. If decide to go with this, I would like to add some variation in shape and color to keep the pattern interesting.

Click image for larger version. 

Name:	Trees.png 
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The result I'm looking for is something slightly similar to this piece.