If you want to display workmanship on something like a corset, please:
If possible, get someone else to take the pictures. Not just because mirrors have issues, but because you have much more trouble getting the right angle.
Try to take the picture on the level with the item in question. If it's a corset being worn, then take the picture at about waist height. From normal standing height you get a fore-shortened view of something like a corset.
Take pictures from front, side and back. Three quarters view might be artistic, but it messes with an understanding of the shape of the corset.
Use good lighting.
And remember, above all else, you are trying to show off the corset, not your artistic ability to pose for or frame pictures. If the corset is more obscured than shown, you are defeating your own purpose.
Yes, you end up with something straight out of a textbook... but isn't that the point?