Sign up with turbo squid. Upload the model (preferably 3DS format) and some pictures, place a price, then wait.
This is my Model, well. Its lots of models put togeter. The lighting was the hardest part.
Different angle of a render or it didn't happen.
Make a sign that says "Hey Blockland" right next to it, and I'll believe.
And I'll say it's photoshopped.
niceuse ambient occulision :D it'll look even more realistic
A render inside the bottle.
:D Now I notice it's the render that makes it look good