Without an example generated image it's very hard to provide hints, but as mentioned before:
- you probably need to retry / re-generate a few times to get the best result
- If you see artifacts around the edges, expand the mask, or use the padding option.
- If it generates clothing, first try increasing the "Denoise Strength" to 0.8 - 0.9, if that doesn't work use "fill" or "latent nothing" for Masked Content.
Most of the time it won't work with your first try, you have to experiment. Every image is different, and the same settings do not always work with all your images.
Sometimes, the image is too complex, i.e. difficult position, hands in front of body (finger problems), etc. I just use a different image, or change the prompt to say "with arms behind body" and mask the full torso.
But again, just try testing stuff out.. it takes a few times / hours to figure it all out.
I'll look in to creating a "difficult images and solutions" section in my guide.