Somewhere along the way, some consignor did you wrong.
Once, a consignor tried to tell you what was fashionable.*
Or was totally unreasonable.**
Or just plain ticked you off.***
So you added another clause****
to your simple, straightforward consignment contract. Or some strong words. Or forbidding language.
And what was once sleek and attractive is now looking like you’re the teensiest-bit, um, self-indulgent? Kinda like Muffin-top?
More calories than you need can make the most attractive outfit go wrong. More forbidding language rules than you need can ruin your business image.
Actual examples of excess consignor agreement fat:
* Please Nothing with Shoulder Pads!
** We will NOT accept items that are dirty (including Deodorant Residue/FDS Spray)
*** Any items with the following will NOT be accepted: Odors(musty, mold, smoke, perfume), Wrinkles, Pills, Lint, Animal Hair, Pulled Threads, Tears, Moth Holes, Missing Buttons, Broken Zippers, Stains, and Signs of heavy wear/washing.
**** We do not take garage sale leftovers!
Auntie Kate The Resale Expert 
I learned from Patti Acquisto to keep our requirements simple and positive. We require clothing to be freshly laundered, excellent condition, and styles that are less than 3 years old. We usually just say “Here are your no-thank-you’s” and don’t go into detail unless they want to know specifically why we didn’t take something. This saves embarassment for everyone. If someone is a repeat offender or brings smoky items, we tactfully explain there is no market for “smoky” (or whatever the problem is) items.