@Nemau: The danger with parallaxing is overclutter. Since it's so EASY to decorate in parallaxing, the joy of being able to tell that horrible, restricting grid to go Frick itself may bring you to the other, darker side of mapping: overdecorating OTL
At those points you want to step back or a get a second opinion for when it's simply TOO MUCH. This goes double for "large" items like trees or big furniture, since they tend to stick out so much more when you pack them tightly and dimensions and perception start getting jacked up. (but hey, this is what the screenshot thread is FOR XD)
As a recommendation, I'd say scrap the parallaxing as a whole, if it's only for particular maps, and make some tile edits of your own (those little herb clumps can be made tiles, and tree mixes too). In the LONG RUN it can be a timesaver, unless you want to go into full out parallax mode (but be warned, it's a long and tiring process and It can be HARDER to map while parallaxing).
But enough rants. Yeah. :x