(sorry for my poor English)
Here are the steps:
1. You need an Adobe Photoshop program, start from CS3 or later.
2. choose your picture that you want to edit.
Above is an example of one of my photo, you can choose yours. After that, open it on your Photoshop program.
3. Add more pictures (two pictures) to fill the side of the box.
Open the pictures and put it in others tab.
4. Create an empty area as the background.
you can duplicate (right click, duplicate layer on layer) or add another background. Apply a clear effect by using brush or the other tools
5.Transform your first picture
use ctrl + T to transform your picture, it is the first side (face) of the box.
Ensure to transform first picture layer only, not the background.
6. Decide the position of your picture
7. Add your second picture and transform it too.
Use ctrl to skew the point of transformation, follow the position below.
8. Add your last picture as the roof of the box.
9. Add some shadow effect to your background (optional)
10. Your box is ready.
Save your picture, File - Save as - decide your format (jpeg) - OK.
+Improve your skill based on the steps.