This is an example I made for an assignment I gave my photography students. I of course, used my favorite thing to photograph - my house! Thought you all might like to see it and do this yourself if you so choose:
First of all, you have to take a TON of photos of one object all at the same time. Stand in one location and snap photos in different angles and make sure you get all of your subject matter. Do not zoom while you are doing this - you want all of the photos to be the same distance from the object.
Once you have all the photos, open them up in Photoshop and create a new document that is quite large (if your photos are sized at 4x6, 300 dpi, then you can make your new document in photoshop 11x17, 300 dpi with a white background - you can always resize it later by cropping or changing the Image Size once everything is together).
Choose one photo that seems to be in the center of the object, and then drag the rest of the images into the frame. Move them how you want and if you need to rotate them to make it work, go to Edit -> Transform -> Rotate to rotate only that photo.
When you are done, you can edit the levels and resize.
Hope someone else has fun with this project!