Hey there, I'm the new guy!

I just wanted to itroduce me.
I'm 19 years old, german and joined the cartographers guild because I desperately need to find a way to create a professional map of a world i am stomping out of nothingness.
When I say professional, than i mean something that looks beatiful. And here in your Forum I have found TONS and TONS of beatiful maps and then some!
But... you know... right know I'm kinda confused, due to there beeing so many tutorials that i can't seem to be able to decide which kind of map i finally WANT to draw!
And then there was THIS really really terrific map i found on deviantart! (Here's the link:http://thevalcian.deviantart.com/art...-Map-117923496 )
And here's my question: Is it possible to produce anything in any time with gimp and inksape that looks in any kind alike? I really am unexperienced with both gimp and photoshop, thus I don't know the differences...