Your Terms and Conditions section is like a contract between you and your customers. You make information and services available to your customers, and your customers must follow your rules.
Common items in a terms and conditions agreement allow you to:
I am a knitter, not a knitting designer. I use other people's patterns and books and as such I make no claim to the patterns. All photos are for the sake of ordering individual garments.
Each item I make is unique. Depending on the materials I use and their price, the same garment could be cheaper or more expensive. Prices negotiated are binding and will not change.
Whatever is agreed to will be upheld. Scout's honour.