I think with clothing, not only sizes but also measurements help tell the story. A tape measure on the bust, waist, hip, inseam, pantleg width, sleeve length, etc.

I look at the rating of the buyer too, and for you the trick will be to get a few sales done and get some positive ratings. That will then help subsequent sales.

The words "Smoke free house" are big with many people. And even "Pet free". Or "non-smoker" in the case of apparel.

More description of colors, since photos to computer screens can result in quite a bit of drift.

Lots of photos, as somebody else said.

A lot of the postings seem to make a fair part of the profit just in inflating the postage cost. Up to you?

My son sold stuff on eBay for a while. He offered insurance. Said it was pure profit.

Romelle