Like they said, you could get a mannequin for cheap, or even free. Or, you can make one from chicken wire, or duct tape (as some people on Craftster have):
If you make it slightly smaller than your smallest size, it would be "invisible" and only serves the purpose of filling the shirt out...so ya wouldn't see it in photos.
In your photos...
- Make sure the clothes look "nice" (no wrinkles unless you actually intended for them to be there (see below)).
- Try to use some better lighting (take the shade off of a lamp...the bare bulb will suit ya just fine ) This will just help illuminate your designs & get rid of some of those big overcast shadows, like on this one http://www.etsy.com/view_item.php?listing_id=60374 I know it's a pink design, but it doesn't scream PINK at me, I want it to yell at me when I look at it, lol. Right now, the collar is yelling at me saying, "Look! I'm a white collar!"
- Try to get rid of any background noise... if you can't actually remove the background, put your clothes on table cloth, or curtain Unless you go entirely the other end of the spectrum & use grass or something as your backdrop. But you get the idea
I took this tshirt outta my closet to make an example I find it really hard to get all of the wrinkles out, so I purposely MAKE wrinkles! They are soft, flowing wrinkles though, not "laundry wrinkles."
I wish I lived closer to ya, I'd take pix of all your stuff. I love taking pictures & messing with them, but don't really feel inspired lately. *shrug*