If it's coming out of the exaust it's probably what Whacker said. Any chance you dribble a little oil on the engine.
Question. Did you drain those two tubes under the left side front cover. should drain them every time you change oil.
make sure you tightened the cap and the dipstick. i forgot the cap when i changed oil on mt 1200 wing and it made a mess cause oil leaked past the cap and it smoked from dripping on the exhaust. also make sure its oil burning not steam
Let it set on the side stand over night and it will smoke every time.. It won't embarrass you in front of a diner.after lunch or dinner but over night yes.
In the garage I usually park it on the center stand.
Run the back wheel up on a slab of wood 1/2 to 3/4 inch thick, makes getting it on the center stand way easier.
Is this the first time you changed the oil on this bike? Is this bike new to you?
it is possible that the previous owner had a Wing that smoked some and changed the oil with smokeless oil then sold it off. here is a link to this type of oil that may have been used in your Wing. http://www.fhsoils.com/motor_faq.html