Tarzy,
I felt the same way about getting YLF approval. I still wont cut a tag off until I've gotten thumbs up from the YLF majority. It is still difficult for me to tell when something looks good on me in a mirror. A photo is necessary now and probably always will be.
I love denim skirts for smart casual outfits. The denim keeps them casual, the skirt makes it smart. I don't typically like flats with dresses and skirts, but denim skirts are the exception. I find wearing flats with a denim skirt keeps it casual. In the winter, I wear boots, in the summer sandals. And what's nice is I can throw on a pair of heels and take that same denim skirt up a notch. (At least that is how I feel about it).
I know we've already had the Great Corduroy Debate--and I'm not looking to start another one--but I still wear them. I do think of them as more casual now than I used to...but I don't equate them with sweat pants. I think of them as casual jeans. Somewhere inbetween ratty ripped faded jeans, and dark, clean polished jeans. I know I'm in the minority with that thinking though.
I think the style of the pant can bring an otherwise dressy fabric down a notch too. For instance, my MIL bought a pair of brown velveteen pants, but they are in a traditional jean style. The style keeps them from looking like holiday wear. My sister bought 2 pair of colored "jean style" pants at Nordstrom a few months ago. They weren't denim, but they were a stretchy sturdy cotton. The fact that they weren't denim differentiated them from jeans--but the style matched that of a pair of classic jeans.
These are the pants my MIL bought:
http://shop.nordstrom.com/S/29.....0&P=1
These are a bit pricey, but I love these:
http://shop.nordstrom.com/S/29.....0&P=1
Colored Denim is a nice option:
http://shop.nordstrom.com/S/29.....0&P=1
I just went to Nordstrom's website, clicked on pants, then chose "casual". You should do that to get some ideas of what you might or might not be drawn to. HTH.