Mac Users: Replace the Alt key with Option and the Ctrl key with Command throughout this tutorial
Pick up the Spot Healing tool and click on the largest spots in the background, and any specks on the child's body. While zoomed in, you can move the image around as you work by pressing the spacebar to temporarily switch to the hand tool without taking your hand off the mouse.
If the spot healing tool doesn't seem to work on a blemish, press Ctrl-Z to undo and try it with a smaller or larger brush. I find that if the area surrounding the flaw is one similar color, a larger brush will do. (Example A: the speck on the wall behind the child's head.) But if the blemish overlaps an area of color variations or texture, you want your brush to just barely cover the flaw. (Example B: the line on the child's shoulder, overlapping the folds of clothing.
