I have started to experiment with my lines in different ways, breaking them up, changing colors etc. This one doesn't have any black lines at all, which is strange for me, but it works at least on this one. This one isn't for sale at the moment, want to keep it as reference for further explorations.
Did take this progress picture with my iPhone at an early stage and I almost wanted to keep it like that, but I felt is was too unfinished. Too bad one can't have the cake and eat it.