I like to see photos of at least two or three finished quilts with different types of fabrics and levels of contrast. I like to see the measurements of any sub-units before they go into the blocks. I like pressing directions. I like suggestions about how the fabrics will fit together, e.g. "This unit is your focus fabric," or "Fabric A should have a lot of contrast with Fabric B." Good luck with your pattern writing. I hope all the suggestions here are helpful.
Darren