[thirtiesradio]

You need to use contact cement to attach large pieces of veneer. I use the flammable type as the water based doesn't seem to work as well.
Cut veneer to the exact size. Spread contact cement on the back side of the veneer and the cabinet.
Wait until tacky then carefully line up the veneer and attach to the cabinet starting on one edge and moving along the veneer. I keep small wood sticks or heavy paper between the veneer and cabinet and remove them as I go along so the veneer won't stick where you don't want it to. Be careful as you won't be able to remove and realign the veneer if you put it on incorrectly. When the veneer is on the cabinet rub with a veneer roller or rounded edge of a wood block. If any edges lift afterwards you can brush in a small amount of contact cement to reactivate it. Good luck with your project!