I really like looking at ebay. If you have time to go through 20+ pages, you can search for dresses with the length of sleeves and fabric you like, and see what comes up. That often makes me think "hmm, I'd like that but not sure it wouldn't make me look ridiculous", or "wow, that's exactly the look I like, but not the fabric", and gradually narrow down what I look at, and find different brands. And charity shops. Most of my professional wardrobe (before I moved) came from there. It's Clay next month, so maybe people will post clothes and you can see what you like?