Thank you guys for the answer.Well Gimp doesn't have any texture scaling tool so I have to do it manually as jtougas described.
I also read ravells tutorial on fantasy cities and the way I look at city mapping has completely changed.Amazing tutorial!

Now about the map I think that I'm happy with the water at the moment after the depths that I have put in and I redid the whole city layout and changed a bit of the backstory in my mind.
But generally speaking I now have a firmer idea about my city so I think everything will come out easier.

C&C is welcome and appreciated.
### LATEST WIP ###
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