I am trying to build a campaign world map and following some the tuts on here and doing some of my own thing I have come up with this map I have attached. (on a side note, what is and optimal size of file for posting previews here?)

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Name:	KallindorWorldMapNoDetail.png 
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Size:	2.88 MB 
ID:	30498

I am trying to make the northern continent and top of the main landmass a mix of whites grays and blues, ie snow ice and rock but I want to keep the texture I have produced with noise and playing with colors.. I have played with the color levels and saturation but can't quite get a good look..

Any suggestions?

Thanks in advance.
Tony