I've got some questions, for Hai-Etlik mostly:

On your map of mars you have created (I suppose?) exact borders and latitude/longitude lines (I'm sorry I suck at the language part here).
I wonder how you did this.
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Are there any tutorials, advice, tips & tricks?

I use PS CS2 mostly, but I'm willing to learn how to use Inkscape, GIMP or maybe even QGIS (can't really afford anything else).