I don't know, it's hard to say exactly what I was doing wrong. If I knew, I guess I would've improved it and would still have my store, lol. I just think that I wasn't focused enough on what kinds of vintage people are looking for--like, maybe I'd find a crazy 80's top with a funky print that might be interesting, but not necessarily something someone wants to pay $20-$30 for.
I also had trouble styling pieces. I think it's definitely important to style pieces in a way that appeals to buyers in your photos, and I didn't always have the resources to create a great look for a piece. It's not like I could pull stuff from my own wardrobe, because I don't really have much of one.
I've noticed that a lot of successful ebay sellers use models. I definitely don't have anyone who'd be willing to model for me. I'd thought about doing it myself, but it felt pretty awkward. I do take self portraits, so it's not that I'm just awkward in front of a camera, but modeling clothes is another realm. Instead I used a silver headless mannequin in my studio. I'm not saying you have to use a model to be successful, but in my personal opinion, it is more appealing to see clothes on an actual person.
Here are some ebay stores that I think seem to be pretty successful:
American Archive
The Kissing Tree Vintage
Bustown Modern
Hellhound Vintage
Crush Vintage
Mama Stone Vintage
Vantage Point Vintage
The Vintage Clothing Gal
I've definitely read a lot of tips for dating vintage online, and have a good bit of info printed and saved in a binder, but like I said, it's really just a starting point. I'd often find stuff with no tags, so I didn't have any RNs or WPLs to guide me. And the care instructions and garment content tags can be misleading. If you know of any good books to buy, please let me know. I swear sometimes the internet is too vast. It's like, you search Amazon for books on vintage fashion and you get so many results... but where to begin? It's nice if you can find someone who can point you in the right direction.
I don't know if I have any specific tips, but if you have any questions, I might be able to answer them. I had my ebay clothing store for almost a year, and I've been selling on ebay for a couple years, so I do have some experience.