Thank you all for all the tips. Had some spare time again, tried my hand at texturing some more today.
Result is looking much better already, but now something else happens, and i might as well ask it here.


Both images are taken in my world, but in the second one, my view is shifted to the left a little. The tower behind gets visible suddenly then,
Is this a texture problem, and if so, any pointers as to where to look ?