Hey, xxstyxx! The example is EXACTLY what I'm looking for!!!
I've managed to create the illusion of perspective change for trees following the idea of the link below, but not for objects with geometric shapes.
Here is my example using trees: drive.google.com/file/d/0BzcAb-FlmDJrd21GUjM2cGluNjg/view (click on the download button on the top of the page).
I'll buy the example so I can finally start creating the art for my games!
Thank you all, people!