I. Thou shalt not ship a human with anyone in blackrom.
II. Thou shalt not ship 15-year-olds (7 sweeps) with 13-year-olds (6 sweeps) or vice versa.
III. Thou shalt not ship AH with anyone except Vriska, because he told us it's okay. He doesn't want to be shipped with anyone else probably. (except for maybe Ms. Paint)
IV. Thou shalt not ship ships that have been rendered UNCANON. That doesn't mean the ones that just aren't there, it means the ones that explicitly ARE NEVER GOING TO HAPPEN EVER AND EVER.
V. Thou shalt not ship ectobiological relations.
VI. Thou shalt remember and follow these rules.
and of course
THE ULTIMATE COMMANDMENT
VII. When shipping, one must ship them in character. or example, Karkat is an asshole, and he'll still be an asshole even if Redrom Shipped with Terezi. ---BubblegumPatty
VIII. You cannot be in an ashen and black relationship with the same person. ---OrangeAipom
Remember, this is only for serious shipping. No one's gonna stop you from writing fanfiction about Colonel Sassacre and Snowman.