Its dimensioned to make use of the ender 3 bed as best as i could. I tried to make the design as simple yet pleasant as possible. The bottom needs to be partial not to accumulate water so i did a hexagon thing which i find appealing.

I do not have any special printing instructions, i guess i would not fill it too much so it would not impale you if you slip and break it in a really unfortunate way.

I glued mine to the wall with Illbruck MS055 elastic polymer glue, which i my favorite solution to fastening almost anything together.