The Floating Head Effect

It's a depth of field issue. It looks like you may have you aperture wide open and being so close will shrink your depth of field to mere millimeters.
If you have a camera that allows you to take manual control try closing your aperture and making up for the exposure on the shutter side. It takes practice, and a tripod if you have to crunch down to longer shutter speeds but it will reduce that effect.

 

As Drgnd correctly states, it is a depth of field issue. Basically, not enough light, or, too close to the subject.

If your camera is automatic and you don't have a lot of choice regarding the settings, try putting more light on the subject. Or, move further away from the doll, and take a "bigger picture". That way, more of the doll should be within the depth of field. You can always crop the image down to size after you've taken it.

 

Are you using an slr? Seems like a depth of field issue. Some camera's can adjust from standard center focus.

Most cameras do center or closest to lens focus.