Nice action, good background, will be easy to isolate the boy.

Careful with using children as a PS source suggestion, realize what Photoshoppers can do with it and if that's what you really want. The end result does not have to be sweet and what you expected. Besides that I always am a bit scared with shots of children on the internet...

A beautiful photograph, but I'm not sure if there is much for the choppers to work with.

I see some possibilities for this as a PS source, good sharpness and contrast between object and background.

chopable

The duck in the back would be good as a PS source, the other 2 are not because the are OOF.

Animals almost always make good sources IF the image is sharp, in this case sadly it is not...

An unusable object, always interesting as a PS source. A great extra is is that the shot is sharp!