Lara it was more to show you where I lifted Abbie from the image, you can get rid of that, I added it using some drop shadow effect to it. When extracting part of an image from the background you have to be careful with your selection as the edges can loose a little detail, especially hair.

Play with the extraction tool a bit and see what you come up with. Being the image was low resolution makes it a little harder to do much with images.

Make sure that you save the image a sRGB profile as that is the standard for web photos etc, at times images look totally different from within the editing software to what it is when saved for the web. Myself only found that out recently and I, as you know, am pretty computer literate and fairly confident now with Photoshop.