Now comes the cutting, take your time. The cleaner the cuts the better. Cutting is very time consuming.
If you don't get it right the first time, try again.
Name your files for your subject.
In this case I have named them, Jade2, Jadehorse2 and Jadeback for the background file. Keep the files as .mix files, that way you can fiddle with them.
When you put them together it should look like this.
You have six way ajustment on your image, so just play with it till it fits.