And you may want to get the planets in the right order aswell
Earth hmmmm, you could always take a joy flight and take some pics that way or make up a small frame anddo a map of earth using earth and water etc, and taking a pic of that then somehow superimpose that on a disk.
Good project though
My wife just said, how about taking a photo of a globe (the ones you see at school) maybe put it on a table or hang it have a light shining on one side and take a pic
Could be done at night for realism and dark background.