Thanks a lot everyone !

@Abu Lafia : I agree with you, but that's a lot of lines to draw... Maybe I should use a more fuzzy brush, I will test that.
@Thomrey : well, my handwriting is not so good... Doing a font with my own letters is a good idea. I'm gonna test it (with crossed fingers)...
@Diamond : well, I hope to not disappoint you. Some fanboys could be dangerous when angered... *pulling new armored kneepads*
@Mouse : thanks, but not I'm not that visionary... There a lot of things that inspires me, to be honest.
@Tonnichiwa & Snodsy : it's before all a rpg setting, so, glad to read that! I may do a map of the city one day.
@Daniel Hasenbos : I appreciate the comparison since it's supposed to be precisely some Near Eastern trading city. And I did use some pictures of croatian cities and Istanbul.