The model is looking pretty good, but your burners and cylinder knobs look really faceted. If you set the FACETRES variable to 10, that should smooth out the cylinders and make them look nice and round.
For rendering, I would suggest turning Perspective on.
I decided to slap together a quick and dirty scene to show what can be done for presentation purposes. I turned Perspective on, added a floor, two walls and 3 point lights. Nothing fancy, just a quick little environment setup to add a little realism to show off your model.
Hope that helps.